Question

1. a line has a slope of -2 and a y-intercept of 21. write its equation in slope-intercept form.
2. write your answer using integers, proper fractions, and improper fractions in simplest form.

Explanation:

Step1: Recall slope-intercept formula

The slope-intercept form of a line is $y = mx + b$, where $m$ is the slope and $b$ is the y-intercept.

Step2: Substitute given values

Substitute $m = -2$ and $b = 21$ into the formula.
$y = -2x + 21$

Answer:

$y = -2x + 21$