Asked by Rachel

What is the equation in the slope intercept form for the line that passes through the points (1,-3) and (3,1)?
Y=3x+1
Y=x-3
Y=2x+5
Y=2x-5

Answers

Answered by bobpursley
Put in x in one of the points, and see what the y computes to be.
Answered by Rachel
I don't understand
Answered by Reiny
slope = (-3-1)/(1-3) = 2

so it has to be one of the last two of your choices
sub in (1,3) into y = 2x+5 ---> doesn't work
sub in (1,3) into y = 2x - 5 ----> Yeahhh!

so y = 2x-5

that is what bob had suggested to you, that is, try the points in the equations.
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