3.1-3.6 Test Review (Pre-Algebra)

Front

What is the formula to find the slope (m) between two points (x1, y1) and (x2, y2)?

Back

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

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if their slopes are opposite reciprocals.

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

If a line has a slope of 0, what does that indicate about the line?

Back

A slope of 0 indicates a horizontal line.

Front

If a line has an undefined slope, what does that indicate about the line?

Back

An undefined slope indicates a vertical line.

Front

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

Back

The slope is 5.

Front

How do you determine the y-intercept from the equation y = mx + b?

Back

The y-intercept is the value of b in the equation.

Front

What is the slope of the line represented by the equation y = -3x + 4?

Back

The slope is -3.

Front

What is the slope of a line that is parallel to the line y = 2x - 1?

Back

The slope is 2.

Front

What is the slope of a line that is perpendicular to the line y = 1/2x + 3?

Back

The slope is -2 (the opposite reciprocal of 1/2).