Initial Value Rate of Change

What is the initial value for this relation?

• 0 m

• 0 s

• 6 m

• 6 s

What is the rate of change of this relation?

• 6 m/s

• 6 s/m

• 0.17 m/s

• 0.17 s/m

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the rate of change?

• 75 feet per hour

• 75 hours per feet

• -75 feet per hour

• -75 hours per feet

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

The y-intercept represents the initial value.

• True

• False

What is the initial value in the equation?

y= 8x + 6

• 8

• 6

What is the rate of change in the equation?

y= 8x + 6

• 8

• 6

The set of data in the table represent a linear function. Which is an equation for this function?

• y = -3x + 1

• y = x + 9

• y = 5x + 1

• y = 2x - 3

An air conditioning company charges a flat fee for each service call, plus an hourly rate for any work completed. The table shows the total cost for certain jobs based on the hours worked. Based on a linear model, what does the company charge for a service call?

• $39.99

• $44.99

• $49.99

• $56.99

What is the equation of the linear function that passes through the points shown in the table?

• y = 2x - 1

• y = 2x + 2