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Mathematics 13 Online
rootbeer003:

help

rootbeer003:

1 attachment
rootbeer003:

@dude

rootbeer003:

120 = 15x 200 = 25x

rootbeer003:

uh

dude:

They gave us points (15,120) and (25,200) Do you know how to find slope using 2 points?

rootbeer003:

slope = 80/10 = 8?

dude:

Right Now we have the slope, in order to get the y-intercept we use the general equation \(y=mx+b\) and substitute what we have \(120=8(15)+b\) Now we solve for b to find the y-intercept

rootbeer003:

0?

dude:

Yes

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