Explain Slope & Intercepts in Context

The cost to join a gym includes a one time membership fee, plus a monthly fee. John joined the gym and paid $325 for 6 months. Abigail joined the gy and paid $475 for 9 months. What is the cost per month after a person joins the gym?

• $25

• $50

• $55

• $150

Tags

CCSS.8.EE.C.7B

During a science experiment, the temperature of a liquid in a beaker started at 8 degrees and dropped by 0.8 degrees every minute. Which function models the temperature of the liquid, y, after x minutes?

• y = 8 - 0.8x

• y = 2.5x - 8

• y = 0.8 + 8x

• y = 8x - 0.8

Tags

CCSS.HSF-BF.A.1A

A repairman charges a flat fee of $50 to come to a customer's house, plus a charge per hour for any work completed. The repairman charged a customer $154 after 4 hours of work. Which function will calculate the cost of the repairman after x hours of work?

• y = 26x + 50

• y = 50x + 26

• y = 38.50x + 50

• y = 50 + 154x

Tags

CCSS.HSF-BF.A.1A

What is the rate of change in the equation?
y=8x+6

• 8
• 6

Tags

CCSS.HSF-LE.A.1B

Tim bought a new phone.  He paid $125 on the day of purchase, then $50 per month until it was paid off. What is the initial value in this situation?

• 50
• 125

Tags

CCSS.HSF.LE.B.5

Tim bought a new phone.  He paid $125 on the day of purchase, then $50 per month until it was paid off. What is the rate of change in this situation?

• 50
• 125

Tags

CCSS.HSF-LE.A.1B

Which of these represents slope-intercept form?

• y - y₁ = m(x-x₁)
• Ax + By = C
• y = mx + b

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the initial value in this equation?
y=8x+6

• 8
• 6

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the initial value in the following equation:

y = -4x + 5

• -4

• 5

• -5

• 4

Tags

CCSS.8.EE.B.5

What is the rate of change in the following equation:

y = -4x + 5

• -4

• 5

• -5

• 4

Tags

CCSS.HSF-LE.A.1B