Graphs

Functions

Name: ______________________________Date: ______________Score: ______ / 20

1.
One dollar buys 12 rupees. How many rupees do you get for $10?
rupees
2.
A function is y = 7x + 2. What is y when x = 2?
3.
A function is y = 11x. What is x when y = 66?
4.
Angelo is 4 years OLDER than Sabrina, who is s. Write a function for a.
1. Aa = s + 4
2. Ba = 4s
3. Ca = s − 4
5.
A taxi charges $5 plus $2 a mile. What is the cost of 11 miles?
$
6.
One dollar buys 9 rupees. Write a function for r rupees from d dollars.
1. Ar = d + 9
2. Br = 9d
3. Cd = 9r
7.
A function is y = 9x + 9. What is y when x = 12?
8.
Angelo is 3 times as old as Sabrina. Sabrina is 13. How old is Angelo?
years
9.
If y = 8x then when x = 6, y = 14.
True False
10.
One dollar buys 4 rupees. How many rupees do you get for $5?
rupees
11.
A function is y = 3x + 7. What is y when x = 4?
12.
A function is y = 9x. What is x when y = 72?
13.
Angelo is 7 years OLDER than Sabrina, who is s. Write a function for a.
1. Aa = 7s
2. Ba = s − 7
3. Ca = s + 7
14.
One dollar buys 7 rupees. How many rupees do you get for $17?
rupees
15.
A function is y = 11x. What is y when x = 5?
16.
A function is y = 12x. What is x when y = 84?
17.
Angelo is 5 times as old as Sabrina, who is s. Write a function for Angelo's age a.
1. Aa = 5s
2. Ba = s + 5
3. Ca = s − 5
18.
A taxi charges $2 plus $7 a mile. What is the cost of 6 miles?
$
19.
One dollar buys 4 rupees. Write a function for r rupees from d dollars.
1. Ar = d + 4
2. Br = 4d
3. Cd = 4r
20.
A function is y = 11x. What is x when y = 110?

Answer key

Graphs — Functions