3.1-3.6 Test Review (Pre-Algebra)

Front

What is the slope formula?

Back

The slope formula is m = (y2 - y1) / (x2 - x1), where m is the slope and (x1, y1) and (x2, y2) are two points on the line.

Front

Write an equation in slope-intercept form of the line with slope 2 and y-intercept 1.

Back

y = 2x + 1

Front

Write the equation of the line with a slope of 1/3 and a y-intercept of -2.

Back

y = 1/3x - 2

Front

Find the slope through the points (1, 2) and (4, 10).

Back

The slope is 8/3.

Front

What do two lines that are perpendicular have in common regarding their slopes?

Back

Their slopes are opposite reciprocals.

Front

What is the definition of slope?

Back

Slope is a measure of the steepness of a line, calculated as the rise over run.

Front

How do you convert the point-slope form to slope-intercept form?

Back

Rearrange y - y1 = m(x - x1) to y = mx + b.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

If a line has a slope of -2, what is the slope of a line perpendicular to it?

Back

The slope of the perpendicular line is 1/2.