Katie C.

# Find the equation of this line in slope intercept form.

Assume that the line passes through the point (−2,−1) and is parallel to the line through the points ( −2,−2) and (0,6).
Find the equation of this line in slope intercept form.
y=

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Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

Katie C.

thank you so much!
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12/15/15

Katie C.

could you also help me with this problem as well?

Find the equations of the lines through the following pairs of points, in slope intercept form.
(1) Find the equation of the line through (5,3),(−4,4).
y=

(2) Find the equation of the line through (2,−2),(5,3).
y=
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12/15/15

Andrew M.

1.  This is done exactly as in the original problem.  Use your points (5,3) and (-4,4) to find the slope.

m = (4-3)/(-4-5) = -1/9

with he slope m and either of the two given points you can find the equation in form y=mx+b.

At this point we have y = (-1/9)x + b

Again, you can use either point... I will use (5,3) as the (x,y) values to solve for b.

3=(-1/9)(5) + b
3 = -5/9 + b
3+5/9 = b
27/9 + 5/9 = b
32/9 = b

your line is:  y = (-1/9)x + 32/9

Try the next one yourself.