In the graph of $$2x+y=8$$, what are the slope and *y*-intercept? .

Flashcard 10 - Subtest II: Mathematics Flashcard Set for the CSET Multiple Subjects Test

The slope = -2. The y-intercept is (0,8).

Rearrange $2x+y=8$ to get it in $y=mx+b$ form, where m is the slope and the y-intercept is (0 ,b).

$2x+y=8$
$2x-2x+y=-2x+8$
$y=-2x +8$

The equation shows that m is -2 and b is 8.
That’s how we know that the slope is -2 and the y-intercept is (0,8)

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