Writing and interpreting functions

...find the amount they raised by washing 7 cars (hint: use the paragraph to make a function [equation], test it with the values you already have in the table, and then plug 7 in for x.)

Mathematical Equivalence

ON

What is x if
f(x) = -2?

• 4
• 0
• 3
• 8

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.

• There is a 2 and a 4.

• The function has an answer of 4.

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.

What is the value of y when x = 8?

• 1

• 2

• 3

Solve for y when x = 10.

y = ½ x +5

• 0

• 10

• 15

• 5

In the equation y=2x+4, what would y equal if x=3?

• 2

• 4

• 17

• 10

Function ________ is a way to name a function.

For what value of t is H(t) = 4" ? 

• 0
• 1
• 2
• 14

The best price for bagels, in dollars, is a function of the number of bagels bought, n. What does b(13)=11.25 mean?

• The price of 13 bagels is $11.25

• The price of 11.25 bagels is $13

• bagels cost $13 for 11.25