8th Unit 3 Chapter Test Review

Front

What is the equation of a vertical line that passes through x = 6?

Back

x = 6

Front

Write the equation of a line with a slope of -3 and a y-intercept of 9.

Back

y = -3x + 9

Front

If y = 40x represents the weight of Brandi's luggage in lbs, what does x represent?

Back

x represents the number of bags.

Front

What is the rate of weight per bag for Brandi's luggage?

Back

40 lbs per bag.

Front

How do you find the slope of a line given two points?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What is the slope of a line that decreases from left to right?

Back

Negative slope.

Front

What does an undefined slope indicate about a line?

Back

The line is vertical.

Front

What is the slope of the line represented by the equation y = -2x + 5?

Back

-2

Front

What type of slope does a horizontal line have?

Back

Zero slope.

Front

If a line has a slope of 2, what does this mean in terms of rise over run?

Back

For every 2 units up (rise), the line goes 1 unit to the right (run).