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What is the slope of y-9=-2(x-8)

2 Answers

3 votes
y - 9 = -2(x - 8)

To find the slope, we must first simplify this equation, then turn it into the slope-intercept form :)

So, simplify.

y - 9 = -2x + 16

Remember : Slope-intercept form ~ y = mx+b

Where m = slope, and b = y-intercept

So, now we must add 9 to both sides.

y = -2x + 16 + 9

Simplify.

y = -2x + 25

Since (-2) is in the (m) spot, and m = slope, then -2 is our slope.

Slope = -2

~Hope I helped!~
User ArBro
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8.5k points
5 votes
Hey!

Let's write the problem:
y-9=-2\left(x-8\right)
We have to isolate for y.

y-9=-2\left(x-8\right)
Apply the distributive property.

y-9=-2x+16
Add 9 to both sides.

y-9+9=-2x+16+9

y=-2x+25
A line equation is on the form of
y=mx+b. The
m represents the slope. So, our answer would be:

m=-2

Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
User Elitezen
by
8.5k points

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