How to Calculate Slope

Write the equation in slope-intercept form for the table.

• y=60x+30

• y=30x+30

• y=30x

• y=30x+90

Calculate the slope from the table.

• -2

• 2

Write an equation with a slope of 1 and a y-intercept of -3.

• y=3x-1 

• y=-3x+1

• y=x+3

• y=x-3

Identify the type of slope.

• Positive

• Negative

• Zero

• Undefined

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

What is the slope of the following graph?

• m = 80

• m = 20

• m = 40

• m = 160

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 average rate of change? 

• 75 ft/h

• 0.013 ft/h

• 116.7 ft/h

• 200ft/h

The graph shows the amount of gas a tractor uses given the number of miles traveled. What does the slope tell you?

• 1/20 of a gallon of gas in increased every mile driven.

• 1/20 of a gallon of gas is used every mile driven.

• 4 gallons of gas is increased every mile drive.

• 5 gallons of gas is used every mile driven.

The graph shows the cost of candy as a function of the weight of the candy. Calculate the slope.

• $2.66 for every ounce of candy bought

• $3 for every ounce of candy bought

• $0.50 for every ounce of candy bought

• $0.38 for every ounce of candy bought