# Algebra

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Find the slope, if it exists, of the line containing the pair of points

(9,1) and (10,-7)

The slope m = __

or the slop is undefined

• Algebra -

m=(y1-y2)/(x1-x2)

does not exist if the denominator = 0

• Algebra -

Thank you, I could not remember the formula to use.
this is what I got:

M = 1 + 7/ 9 - 10 = 8/-1

I'm still not sure what the slope is.

Thanks in advance for you help.

• Algebra -

(1+7)/(9-10)

= 8/-1

= -8

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