Parabola vertex and axis of symmetry

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1. Example: two-step equation with numerator x | Linear equations | Khan Academ
2. Example 2: Variables on both sides | Linear equations
3. Solving equations with the distributive property | Linear equations
4. A clever application of the distributive property to solve a multi-step equation
5. Linear systems word problem with substitution | Systems of equations | 8th grade
6. Challenge example: Sum of integers | Linear equations
7. Example: Solving for a variable | Linear equations
8. Solving for F in terms of C | Linear equations
9. Absolute value smallest to biggest | Pre-Algebra
10. Absolute value and number lines | Negative numbers and absolute value | Pre-Algebra
11. Absolute value equations 1 | Linear equations
12. Absolute value equation example 2 | Linear equations
13. Patterns in sequences 1 | Linear equations
14. Patterns in sequences 2 | Linear equations
15. Equations of sequence patterns | Sequences, series and induction | Precalculus
16. Finding the 100th term in a sequence | Sequences, series and induction | Precalculus
17. Recognize functions from tables | Functions and their graphs I
18. Testing if a relationship is a function | Functions and their graphs I
19. Domain of modeling functions | Functions and their graphs I
20. Domain and range 2 | Functions and their graphs I
21. Direct variation 1 | Rational expressions I
22. Basic rate problem | Linear equations
23. Basic Linear Function
24. Modeling with linear equations example 1 | Linear equations and functions | 8th grade
25. Recognizing linear functions | Linear equations and functions | 8th grade
26. Exploring nonlinear relationships
27. Finding the slope of a line from its graph
28. Interpreting linear tables word problems example 1
29. Finding intercepts from an equation
30. x- and y-intercepts 2 | Linear equations and functions | 8th grade
31. Graph from slope-intercept equation example
32. Equation of a line 2
33. Converting linear equations to slope-intercept form | 8th grade
34. Writing equations in all forms
35. Parallel Lines
36. Parallel Lines 2
37. Parallel lines 3
38. Perpendicular Lines
39. Perpendicular lines 2
40. Constructing and solving a two-step inequality | Linear inequalities
41. Solving a two-step inequality | Linear inequalities
42. Constructing and solving a one-step inequality | Linear inequalities
43. Absolute value inequalities example 1 | Linear equations
44. Absolute inequalities 2 | Linear equations
45. Absolute value inequalities example 3 | Linear equations
46. Writing and using inequalities | Linear inequalities
47. Constructing and solving a multi-step inequality example
48. Constructing, solving two-step inequality example | Linear inequalities
49. Solving and graphing linear inequalities in two variables 1 | Algebra Basics
50. Graphing linear inequalities in two variables 2 (old and redone in newer video)
51. Graphing inequalities and checking solutions example
52. Solving systems by graphing
53. Analyzing solutions to linear systems graphically 1
54. Example 3: Graphically solving systems | Systems of equations | 8th grade
55. Analyzing solutions to linear systems algebraically
56. Example 2: Solving systems by substitution | Systems of equations | 8th grade
57. Example 3: Solving systems by substitution | Systems of equations | 8th grade
58. Systems of equations word problems example 1
59. Example 2: Solving systems by elimination | Systems of equations | 8th grade
60. Example 3: Solving systems by elimination | Systems of equations | 8th grade
61. Systems and rate problems
62. Systems and rate problems 2
63. Systems and rate problems 3
64. Mixture problems 1
65. Mixture problems 2 | Linear equations
66. Mixture problems 3 | Linear equations
67. Graphing systems of inequalities
68. Graphing systems of inequalities and checking solutions example I
69. Graphing systems of inequalities 3
70. Exponent Rules 1
71. Exponent Rules 2
72. Exponent Rules 3
73. Scientific notation 1
74. Scientific notation 2
75. U.S. national debt (scientific notation word problem) | Pre-Algebra
76. Simplifying expressions with exponents
77. Simplifying expressions with exponents 2
78. Simplifying expressions with exponents 3
79. Pythagorean theorem 1 | Right triangles and trigonometry | Geometry
80. Pythagorean theorem 2 | Right triangles and trigonometry | Geometry
81. Pythagorean theorem 3 | Right triangles and trigonometry | Geometry
82. Simplifying a cube root | Exponents, radicals, and scientific notation | Pre-Algebra
83. Simplifying Radical Expressions 2
84. Simplifying Radical Expressions 3
85. Solving radical equations 1 | Exponent expressions and equations
86. Solving radical equations 2 | Exponent expressions and equations
87. Solving radical equations 3 | Exponent expressions and equations
88. Applying radical equations 1 | Exponent expressions and equations
89. Applying radical equations 2 | Exponent expressions and equations
90. Applying radical equations 3 | Exponent expressions and equations
91. Fractional exponent expressions 1 | Exponent expressions and equations
92. Fractional exponent expressions 2 | Exponent expressions and equations
93. Fractional exponent expressions 3 | Exponent expressions and equations
94. Example 2: Multiplying two monomials with two variables
95. Multiplying and dividing monomials 2 | Rational expressions I
96. Multiplying and dividing monomials 3 | Rational expressions I
97. Example 1: Modeling with polynomials
98. Example 2: Modeling with polynomials
99. Example 2: Adding polynomials
100. Adding and subtracting polynomials | Algebra Basics
101. Example 4: Adding and subtracting polynomials
102. Multiplying Polynomials1
103. Example 3: Modeling with polynomials
104. Example 3: Multiplying a binomial by a polynomial word problem I
105. Squaring a binomial | Quadratics and polynomials | Algebra Basics
106. Example 3: Finding the square of a binomial with two variables
107. U08_L2_T4_we3 Special Products of Polynomials 3
108. Bay Area CBS Station with Salman Khan
109. Factoring and the Distributive Property
110. Example 2: Factor a quadratic binomial with two variables by taking a common factor
111. Example 4: Factor a polynomial with two variables by taking a common factor
112. Example 7: Factor a polynomial with two variables by grouping
113. Factoring Trinomials by Grouping 2
114. U09_L1_T2_we3 Factoring Trinomials by Grouping 3
115. Example 2: Factoring quadratics by grouping
116. Example 3: Factoring quadratics by taking a common factor and grouping I
117. Example 4: Factoring quadratics by taking a negative common factor and grouping
118. Example 3: Factoring quadratics as a perfect square of a sum: (a+b)^2
119. Example 5: Factoring a fourth degree polynomial using the "perfect square” form
120. Example 6: Factoring a difference of squares with two variables I
121. Solving a quadratic equation by factoring I
122. Recognizing a perfect square quadratic I
123. Dimensions from volume of box | Quadratic equations
124. Quadratic Functions 1
125. Parabola vertex and axis of symmetry | Quadratic equations
126. Graphing a parabola by finding the roots and vertex | Quadratic equations
127. Example 1: Completing the square | Quadratic equations
128. Example 2: Completing the square | Quadratic equations
129. Completing the square for vertex form | Quadratic equations
130. Completing the square for quadratic formula | Quadratic equations
131. Example 1: Using the quadratic formula | Quadratic equations
132. Example 2: Using the quadratic formula | Quadratic equations
133. Example 3: Using the quadratic formula | Quadratic equations
134. Applying Quadratic Functions 1
135. Applying Quadratic Functions 2
136. Applying Quadratic Functions 3
137. Non-linear systems of equations 1 I
138. Non-linear systems of equations 2 I
139. Non-linear systems of equations 3 I
140. Simplifying rational expressions 1 | Polynomial and rational functions I
141. Simplifying rational expressions 2 | Polynomial and rational functions I
142. Simplifying rational expressions 3 | Polynomial and rational functions I
143. Multiplying and dividing rational expressions 1 I
144. Multiplying and dividing rational expressions 2 I
145. Multiplying and dividing rational expressions 3 I
146. Adding and Subtracting Rational Expressions 1
147. Adding and subtracting rational expressions 2 I
148. Adding and subtracting rational expressions 3 I
149. Solving rational equations 1 | Polynomial and rational functions I
150. Solving rational equations 2 | Polynomial and rational functions I
151. Solving rational equations 3 | Polynomial and rational functions I
152. Applying rational equations 1 | Polynomial and rational functions I
153. Applying rational equations 2 | Polynomial and rational functions I
154. Applying rational equations 3 | Polynomial and rational functions I
155. Number sets 1 | Fractions | Pre-Algebra
156. Number sets 2 | Fractions | Pre-Algebra
157. Number sets 3 | Fractions | Pre-Algebra
158. Understanding Logical Statements 1
159. Understanding Logical Statements 2
160. Understanding Logical Statements 3
161. Understanding Logical Statements 4
162. Understanding Logical Statements Commentary
163. Inductive reasoning 1 | Sequences, series and induction | Precalculus
164. Inductive reasoning 2 | Sequences, series and induction | Precalculus
165. Inductive reasoning 3 | Sequences, series and induction | Precalculus
166. Difference between inductive and deductive reasoning | Precalculus
167. Deductive reasoning 2 | Sequences, series and induction | Precalculus
168. Deductive reasoning 3 | Sequences, series and induction | Precalculus
169. Finding probability example 3 | Probability and combinatorics | Precalculus
170. Events and Outcomes 2
171. Example: Probability through counting outcomes | Precalculus
172. Independent or dependent probability event? | Precalculus
173. Test taking probability and independent events | Precalculus
174. Die rolling probability with independent events | Precalculus
175. Example: Ways to arrange colors | Probability and combinatorics | Precalculus
176. Example: Ways to pick officers | Probability and combinatorics | Precalculus
177. Example: 9 card hands | Probability and combinatorics | Precalculus
178. Example: Lottery probability | Probability and combinatorics | Precalculus
179. Example: Different ways to pick officers | Precalculus
180. Example: Combinatorics and probability | Probability and combinatorics | Precalculus
181. Absolute value equations | Linear equations
182. Systems of linear inequalities word problems example I
183. U06_L1_T1_we1 Solving Systems by Graphing
184. Finding the inequality representing the graph example
185. U03_L2_T1_we2 Representing Functions as Graphs
186. Inductive patterns | Sequences, series and induction | Precalculus
187. Multiplying monomials

Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.