Linear Functions Review

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

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

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

• -3
• 3
• 4
• -4

Which is the graph of y= -x + 2?

• A
• B
• C
• D

What type of slope does the graph have?

• Zero
• Undefined
• Negative
• Positive

Bob has $150 in his savings account and saves $40 per month. Which function models his savings?

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

A golf course charges $15 to rent golf clubs and charges $25 per round to play.  Write an equation to represent the total cost, T, for one player.

• T = 15 + 25r
• T = 15g + 25r
• T = 40 r
• T = 15r + 25

_{What is the y-intercept of the line?}

•  (0,¹/₂)
• (0,1)
• (0, ^-1/2)
• (0, -1)

^{What is the x- intercept of the line?}

• (1, 0)
• (2, 0)
• ( -1, 0)
• (-2, 0)

What is the y-intercept in the equation x + 2y = 4

• (0, 0)
• (0, 2)
• (4, 0)
• (2, 0)

Sam joins a chocolate club for $22.  He pays $0.35 per ounce of chocolate after he has paid the membership fee. What function represents this situation?

• f(x) = 0.35y + 22
• f(x) = 0.35x - 22
• f(y) = 0.35x + 22
• f(x) = 0.35x +22