Linear Functions and Equations Review

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours? 

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work. 

What is the constant rate of change?

What is the constant rate of change for the following graph?

The table shows the cost of long distance calls based on the number of minutes used. Is there a constant rate of change, and if so what is it?

• Yes, 10 calls per minute

• Yes, $.10 per minute

• Yes, $.40 per minute

• Not a constant rate

Find the 35th term in the arithmetic sequence: -10, -14, -18, -22, ...

Find a₂₀ in the arithmetic sequence: 5, 12, 19, 26...

Find the slope of the line that passes through
(10, 1) and (5, 2)

What is the rate of change?

Which equation represents the following graph?

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