Slope and lines

Most line questions need the slope and one point.

ACT Math: Algebra and coordinates

m = \frac{y _{2} - y _{1}}{x _{2} - x _{1}}

Work through it

$- \frac{1}{2}$

$(3, 4)$

A perpendicular slope only needs the reciprocal.

Also change the sign.

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