Front

Parallel Lines

Back

Two co-planar lines that never intersect; they share the same slope.

Front

Perpendicular Lines

Back

Two co-planar lines that intersect to form four right angles.

Front

Slope: The rate at which the y value of a linear function rises or falls as x increases.

Back

The rate at which the y value of a linear function rises or falls as x increases.

Front

x - intercept

Back

All the above

Front

(x, y)

Back

ordered pair

Front

y-intercept

Back

Value of y where the line crosses the y-axis.

Front

Positive slope

Back

Front

Negative slope

Back

Front

Undefined slope

Back

Front

Zero slope

Back