PA 4.1-4.2 Flashcard Review

Front

What is the graph of the equation x = -4?

Back

A vertical line that crosses the x-axis at -4.

Front

Which equation represents a line with a slope of 1 and a y-intercept of 5?

Back

y = x + 5

Front

What is the table of values for the equation y = x + 2?

Back

x: -2, -1, 0, 1, 2; y: 0, 1, 2, 3, 4.

Front

What are the slopes of perpendicular lines?

Back

They are opposite reciprocals.

Front

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

Back

2.

Front

What does the slope of a line represent?

Back

The rate of change of y with respect to x.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the y-intercept of the equation y = 3x + 4?

Back

4.

Front

What does it mean for two lines to be parallel?

Back

They have the same slope and will never intersect.

Front

What is the slope of the line represented by the equation y = -1/2x + 3?

Back

-1/2.