Question 100529
1. Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible. (-1, 3) and (4, -2) 
I got
m = [- 2 - (3)]/[4 - (- 1)] = -5/5 = -1
That is correct.
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You know the form of the line is y=mx+b
You know m=-1, and y=3 when x=-1, so substitute into the form and solve for "b".
3 = -1*-1+b
b=2
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Therefore the equation is 
y = -x + 2
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2. 1. Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible. (-2, -3) and (2, 0) 
I got
m = [0 - (-3)]/[2-(-2)] = 3/4
That is correct.
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m = 3/4, (x1, x2) = (-2, -3)
y - (-3) = (3/4) (x-(-2))
y + 3 = (3/4)x + (3/4)2
y + 3 = (3/4)x + (3/2)
y = (3/4)x +(3/2)-3
y = (3/4)x - (3/2)
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Cheers,
Stan H.
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I know the answer is supposed to be y = 3/4 x - 3/2, but I can't get it... What am I doing wrong???