Chapter 2 Linear Equations and Functions - 2.4 Write Equations of Lines - 2.4 Exercises - Skill Practice - Page 101: 13

$y-13=-9(x-8)$

Work Step by Step

This form is known as point-slope form which means we substitute our coordinates and the given slope, $m$ into the formula, $y-y_1=m(x-x_1)$ where $(x_1,y_1)$ is the point. $(8,13)$ is the point, $m=-9$ $y-13=-9(x-8)$

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