• #### Solving Quadratic Equations by Factoring - Problem 15

Explanatin of why it is valid to divide both sides of a quadratic equation by a constant, but not by a variable
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• #### Inverse Variation - Problem 2

##### Math›Algebra›Linear Equations and Their Graphs
How to tell if a given equation represents an inverse variation relationship.
• #### Derivatives of Polynomial Functions - Problem 3

##### Math›Calculus›The Derivative
How to find points on the graph of a polynomial function with a given slope.
• #### Inverse Variation - Problem 1

##### Math›Algebra›Linear Equations and Their Graphs
How to tell if tables of values represent inverse variation relationships.
• #### Polynomial Vocabulary - Problem 2

##### Math›Algebra›Polynomials
How to give a polynomial a two word name, including monomial, binomial, trinomial, polynomial, constant, linear, quadratic, cubic, quartic, or n-th degree.
• #### Solving Quadratic Equations by Factoring - Problem 4

##### Math›Algebra 2›Quadratic Equations and Inequalities
How to solve quadratic equations by factoring by simplifying coefficients.
• #### Solving Quadratic Equations by Factoring - Problem 15

##### Math›Algebra 2›Quadratic Equations and Inequalities
Explanatin of why it is valid to divide both sides of a quadratic equation by a constant, but not by a variable
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• #### Derivatives of Logarithmic Functions - Problem 1

##### Math›Calculus›The Derivative
How to use properties of the derivative to find the derivative of a function that contains a natural log term.
• #### Derivatives of Exponential Functions - Problem 3

##### Math›Calculus›The Derivative
How to use properties of the derivative (and properties of exponents) to differentiate functions that are partly exponential.
• #### Direct Variation - Problem 2

##### Math›Algebra›Linear Equations and Their Graphs
How to write the equation that relates two variables that vary directly from a word problem.
• #### Inverse Variation - Problem 3

##### Math›Algebra›Linear Equations and Their Graphs
How to solve for a variable in an ordered pair if told that two points are solutions to an inverse variation.
• #### Solving Systems of Equations using Elimination - Problem 7

##### Math›Algebra›Solving Systems of Equations
Solving a system of equations by elimination or linear combination by multiplying one equation by a constant
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• #### Writing an Equation to Describe Pictures - Problem 3

##### Math›Algebra›Graphs and Functions
How to write an equation to describe a set of pictures when the change isn't constant.
• #### Solving Systems of Equations using Elimination - Problem 5

##### Math›Algebra›Solving Systems of Equations
Solving a system of equations by elimination, or linear combination, when both equations need to be multiplied by a constant
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• #### Solving Quadratic Equations Using Square Roots - Problem 14

Solving quadratic equations with x^2 and a constant by taking square roots
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• #### Motion Along a Line - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to write equations describing motion in a straight line given the velocity and the position when t=0.
• #### Solving Quadratic Equations Using Square Roots - Problem 14

##### Math›Algebra 2›Quadratic Equations and Inequalities
Solving quadratic equations with x^2 and a constant by taking square roots
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• #### Motion Along a Line - Problem 1

##### Math›Precalculus›Vectors and Parametric Equations
How to write equations describing motion in a straight line given the velocity and the position when t=2.
• #### Exponential Growth and Decay - Problem 7

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to predict the age of a fossil with a known decay constant and exponential decay modeling.
• #### Motion Along a Line - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find the velocity and speed, and the displacement and distance traveled, of an object traveling in a straight line.