Math Independent and Dependent Variables and Equation

The numbers of an ordered pair that locate a point on a coordinate graph.

• variables

• integers

• constants

• coordinates

A mathematical sentence that shows that two expressions are equivalent.

• equation

• expression

• varaibles

• coefficients

A value that does not change. Examples: -2; 5

• integer

• constant

• coefficient

• variable

What is the definition of an equation?

• An equation that represents two quantities that change in relationship to one another y = 2x, y = 4x − 3

• Operations that “undo” each other, such as addition and subtraction, or multiplication and division

• A mathematical sentence that uses an equal sign, =, to show that two expressions are equal 4x = 16, a + 7 = 21

• A value that makes an equation true 6 is the solution of the equation x − 4 = 2

What is an independent variable?

• A mathematical sentence without an equal sign.

• Determining the value of a numerical or algebraic expression.

• An ordered pair (x,y) that makes an equation true.

• The variable that represents the input values of a function.

What is an equation in two variables?

• the variable that represents the input values of a function.

• The variable that represents the output values of a function.

• An equation that represents two quantities that change in relationship to one another.

• An ordered pair (x,y) that makes an equation true.

Carey and Justin are raising money to purchase books for their school's library. The more money they raise, the more books they will be able to purchase for the library.
m = the amount of money Carey and Justin raise
b = the number of books Carey and Justin will be able to purchase
Which of the variables is dependent?

• m

• b

In order to earn extra money on the weekends, Josie's string quartet performs at wedding receptions. The longer the reception, the more money they earn.
r = the length of the reception
m = the amount of money Josie's quartet earns
Which of the variables is independent?

• r

• m

Priya streams movies through a company that charges her a $5 monthly fee plus $1.50 per movie What is the dependent variable?

• the number of movies she rents

• the company that she rents from

• the money it costs

• There isn't one

Kira designs websites. She can create three different websites each week. Kira wants to create an equation that will give her the total number of websites she can design given the number of weeks she works.
What is the independent vairble

• the number of websites she makes

• the number of weeks

• the design of the website

• there isn't one