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3 votes
(-4,1) and (-8,7)

write an equation in slope-intercept form

User Bxjx
by
8.1k points

1 Answer

7 votes

Answer:

y = -2x - 9

Explanation:

so we have our two points, (-4,-1) and (-8,7) What we need to do to find our slope is y2 - y1 over x2 - x1. Once plugging in the numbers and subtracting it should give you 8/-4. 8 divided by -4 is -2. m = -2. Now to find our "b" we plug in our slope, and plug in one of the two points into the format of y = mx + b.

-1 = -2(-4) + b

multiply -2 and -4

-1 = 8 + b

we subtract 8 from itself and -1

-9 = b

Our equation is y = -2x - 9

User Hal Canary
by
8.4k points

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