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
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.
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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