Tutoring- slope and y-intercept

Is the slope positive or negative?

• Positive

• Negative

In y = mx + b, which variable represents the y-intercept?

• y

• m

• x

• b

The point where the graph crosses the y-axis.

• Slope

• x-intercept

• y-intercept

What is the slope of the equation:

y = -2x + 5

• 2

• -2

• 5

What is the y-intercept of the equation

y = 5x - 8

• 5

• -5

• 8

• -8

What is the slope?

• -1/3
• -3
• -4
• 5

What is the y-intercept?

• -3/1

• -4

• -7

• 5

Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.
y=0.5x+10
What does the slope of the graph of this equation represent?

• The daily fee for the moving truck
• The dollars per-mile fee for the moving truck

• How much Charlie paid for the truck
• The number of miles he drove

The table represents a used car salesman's monthly salary including commission made on the sale of cars.  What is the slope and what does it represent?

• The slope is $850/car and it represents the commission per car sold.
• The slope is $425/car and it represents the commission per car sold.
• The slope is $1500 and it represents the monthly salary before commission.
• The slope is $850 and it represents the monthly salary before commission.

The equation c = 0.20t + 3.50 shows the relationship between the charge c in dollars for renting a kayak for t minutes.What is the meaning of the y-intercept?

• It costs $3.50 per minute to rent a kayak.
• For $0 you can rent a kayak for 3.5 minutes.
• Every 3.50 minutes, you have to pay $1.00.
• You have to pay $3.50 up front before using the kayak.