Level 3 8.6 & 8.7 Linear Equations Flashcards

Practice vocabulary flashcards covering slope formulas, linear equation forms, and intercepts based on the Level 3 quiz and review materials.

Formula for slope

$$m = \frac{y_2 - y_1}{x_2 - x_1}$$

Slope-intercept form

$$y = mx + b$$

Slope

The steepness of a graph representing the rate of change or rise over run.

Variable $m$

The symbol used in equations to represent the slope of the line.

Variable $b$

The symbol used in equations to represent the $y$-intercept of the line.

$y$-intercept

The point on a graph where a line crosses the vertical axis.

$x$-intercept

The point on a graph where a line crosses the horizontal axis.

Horizontal line slope

The slope of a line with an equation like $y = 5$, which is always $0$.

Vertical line slope

The slope of a line with an equation like $x = 4$, which is always undefined.

Four types of slope

The distinct categories of slope: positive, negative, zero, and undefined.