Emily has a gift certificate for $10 to use at anonline store.She can purchase songs for $1 each or episodes ofTVshows for $2 each. She wants to spend exactly $10.Choose an equation to show the relationship betweenthenumber of songs, x, Emily can purchase and the numberofepisodes of TV shows, y, she can purchase. Answers A.x − 2y = 10 B.x + 2y = 10 C.2x + y = 10 D.1 + 2y = 1
Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
Emily has a gift certificate for $10 to use at anonline store.She can purchase songs for $1 each or episodes ofTVshows for $2 each. She wants to spend exactly $10.Choose an equation to show the relationship betweenthenumber of songs, x, Emily can purchase and the numberofepisodes of TV shows, y, she can purchase.
Answers
A.x − 2y = 10
B.x + 2y = 10
C.2x + y = 10
D.1 + 2y = 1
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