U3 Review: Linear Functions

Which point lies on the line y = 5x - 2?

• (0, 4)

• (2, 8)

• (1, 3)

• (4, 18)

What is the slope of the line passing through (3, 5) and (1, -15)?

Mathematical Equivalence

ON

Which equation represents a line parallel to the y-axis?

• y = 2

• x = 4

• y = x + 2

• y = 4x - 2

In the equation f(x) = 3x - 6, what is the y-intercept?

• 3

• -6

• 6

• 0

A cell phone plan charges $20 per month plus $0.05 per minute of talk time. Write an equation for the total cost C as a function of minutes talked m.

Mathematical Equivalence

ON

What was the initial temperature of the coffee?

Find the point of intersection for the system of equations: y = 2x + 1, y = -x + 7.

• (2, 5)

• (1, 3)

• (3, 7)

• (0, 1)

A theater has 20 seats in the first row. Each row after has 2 more seats than the row before it. How many seats are in the 10th row?

A car travels at a constant speed of 60 miles per hour. What is the equation for the distance d traveled as a function of time t in hours?

• d = 60t

• d = 60 + t

• d = t/60

• d = 60 - t

Solve the equation 3x - 7 = 2x + 5 for x.