Slope-Intercept Quiz

Which option is a definition of slope?

• rate of change
• change in y over change in x
• slant of a line
• all of the above

The line y=-2/3x+5 has a slope and y-intercept of?

• -2/3 and 5
• 5 and 2/3
• 2/3 and 5
• none of these

What is the y-intercept of this line: -3x+2y=8?

• -3
• 2
• 4
• 3/2

What is the slope of this line? 4=2x-4y

• 1/2
• 2
• -1/2
• -2

A car travels 225 miles in 3 hours. What is its rate of change?

• 20mph
• 70mph
• 75mph
• 60mph

Write an equation in slope intercept form to fit: An airplane with no fuel weighs 2575lbs. Each gallon of gasoline added to the fuel tank weighs 6 lbs.

• 2575=6x
• y=2575x+6
• y=6x+2575
• None of these

In the equation y=-4/5x-2, which number represents slope?

• -4/5
• -2
• 4/5
• 2

In the equation y=9-2/3x, which number represents the slope?

• -9
• 9
• -2/3
• 2/3

The y-intercept is where the graph crosses the y-axis, so the x-coordinate is always 0 at that point.

• False
• True

In the equation 7=4x-10y, what would the y-intercept be?

• 7
• 10
• -7
• -7/10