Function OR Not a Function
Write a function
Write a function
(Word Problems)
100

(4,3) (7,9) (5,6) (-4,1)

Function, x-values don't repeat

100

m = -9

b=3

f(x)= -9x+3

100

Billy was saving money for a car. He has $2,670 in his back account currently. He plans to continuously add $253 each week. Write a function for the amount of money in Billy's account

f(x)= 253x+2670

200

(0,3) (8,9) (3,0) (-4,1)

Function, no x-values repeat

200

m = 7

b= -16

f(x)=7x-16

200

Diana was in a hot air balloon. She was at 183 meters in the air. She continued to rise 12 meters per minute. Write a function to represent for Diana's balloon ride.

f(x) = 12x+183

300

x y

2 4

7 -8

8 4 

4 -3

9 0

Function, no x-values repeat

300

m = -5

b=16

f(x)= -5x+16
300

Amy drives 65 miles per hour while on a road trip. She has already driven 197 miles. Write a function for the amount of miles she has driven.

f(x)= 65x+197

400

x y

2 7

7 -8

8 2 

2 -3

9 0

Not a function 2 repeats

400

(3,7) & (5,11)

f(x)= 2x+1

400

Frankie already has $23.75 worth of groceries but he needs one last item, apples. The green apples were on sale $0.79 per pound. Write a function to represent the amount she spent on groceries.

f(x)= 0.79x+23.75

500

Explain the vertical line test

a vertical line can only cross the graph once

OR

a vertical line will not cross the graph more than once

500

(4,5) & (8,7)

f(x)=0.5x+3

500

Ezra was typing a paper for his English class. He already has 357 words for his 10 page paper. Over the next couple days, he writes 96 words per day until he finishes his paper. Write a function to represent the time he spent on his paper.

f(x)= 96x+357

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