Which equation is a point-slope form of the equation of this line (-2, 1 ) and (1, 7 )

asked Nov 10, 2019 141k views

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4 votes

The point-slope formula:

$y-y_1=m(x-x_1)\\\\m=(y_2-y_1)/(x_2-x_1)$

We have (-2, 1) and (1, 7).

Substitute:

m=(7-1)/(1-(-2))=(6)/(3)=2

$y-1=2(x-(-2))\\\\y-1=2(x+2)$

Refael answered Nov 16, 2019

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