slope intercept practice

Write an expression for the following. Jerry has $20 and makes $7 per hour.

• 7x + 20
• 7 + 20x
• 20 + 7

What is the slope?

• 5
• 1/5
• 15
• 10

Look at image.

• F

• G

• H

• J

There were approximately 11,000 students enrolled at Western Carolina last year. This figure goes up by about 225 students each year. Create an equation that can be used to find y, the total number of students, if x represents the number of years?

• y=225x+11000

• y=11000x+225x

• x=225y+11000

• y=225x

What is the rate of change for the following graph?

• 80
• 20
• 40
• 160

Sonya has $40 in her lunch account and spends $2 each day to eat lunch. Which equation can be used to find the amount of money Sonya has left on her account after x days?

• y = 2x + 40

• y = - 2x + 40

• y = 40x + 2

• y = - 40x + 2

What is the formula of this graph?

• y = - 2/3x + 5

• y = 2/3x + 5

• y = - 5x + 2/3

• y = 5x + 2/3

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5
• y = 2.50x + 3
• y = 2.50x 
• y = 3x + 2.50

Which equation represents the following graph?

• y = 3x + 2
• y = -2x + 3
• y = 2x + 3
• y = -3x + 2