Graphing Linear Functions Flashcards

Question 1

State the slope-intercept form of a line and identify each parameter.

Accepted Answer

$$y=mx+b$$
$m$ is the slope (rate of change) and $b$ is the $y$-intercept $(0,b)$.

Question 2

What is the equation of a horizontal line and what is its slope?

Accepted Answer

A horizontal line has equation $y=c$ (constant). Its slope is $0$.

Question 3

State the property of perpendicular lines in the coordinate plane.

Accepted Answer

For non-vertical/non-horizontal lines, slopes are negative reciprocals: $m_1m_2=-1$. A horizontal line ($m=0$) is perpendicular to a vertical line (undefined slope).

Graphing Linear Functions Flashcards

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