Linear Functions

In the equation, y = mx + b, the letter b is the ___________.

• y-intercept
• x-intercept
• slope
• rate of change

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the slope of the equation?
y = -3x + 4

• -3
• 3
• 4
• -4

Tags

CCSS.8.EE.B.5

Which equation is being represented by this line?

• y = -1x + 2
• y = 1/2x + 2
• y = 3x -4
• y = -3x +2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Consider the equation:
y=-x+4
Identify the slope and y-intercept.

• m=4, b=-x
• m=-x, b=4
• m=1, b=4
• m=-1, b=4

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write the equation for the line

•  y=⅗x+1
•   y=⅗x-1
•  y=(5/3)x+1
• y=(3/5)x+1

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

Jahzier has $150 in his savings account and saves $40 per month. Which equation represents the amount he has in his account after x months?

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

Tags

CCSS.HSF-BF.A.1A

Brian has $20 and makes $7 per hour. Which equation represents the total amount of money Brian has after working x hours?

• y = 7x + 20

• y = 7 + 20x

• y = 20 + 7

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

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

• y = 40 + 2x

• y = 40 - 2x

• y = 2 + 40x

• y = 2 - 40x

Tags

CCSS.HSF-BF.A.1A

Tia has a $20 amazon gift card and spends $3 each month. Which equation can be used to find how much money Tia has on her giftcard after x months?

• y = 3x + 20

• y = 3 + 20x

• y = -3x + 20

• y = -20x + 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Tony uses x minutes of airtime, what is an equation that can be used to determine his monthly cell phone bill (C)?

• C = 0.20x + 15

• C =15 (0.20x)

• C = 15 + x + 0.20

• C = 0.20 + 15x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2