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Home Q & A Board Science-Related Homework Help Mathematics
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micmac63 micmac63
wrote...
12 years ago
How do you change an equation that is not in slope-intercept form, to slope-intercept form?
Thanks.
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wrote...
#1
12 years ago
y=r/z* x+i

where r is rise and z is run x is the x coordinate i is the y-intercept and y is y
3x+2y=z is standard form

solve for y or x for the intercept. Find the intercept by replacing x or y with 0.

It should tell you in your textbook. If it doesn't, your textbook is crap, and you should search amazon.com or your local library for a good algebra book
wrote...
#2
12 years ago
slope intercept form is y=mx+b
m is slope, b is y-intercept.

let's try changing 4x - 12y = 16 into slope intercept form.

4x - 12y = 16
4x - 12y + 12y = 16 + 12y
4x = 16 + 12y
4x - 16 = 16 + 12y - 16
4x - 16 = 12y
(divide by 12)
4x/12 - 16/12 = 12y/12
1/3x - 4/3 = y

y = 1/3x - 4/3
in slope intercept form, you can easily figure out the slope and y-intercept.
slope = 1/3, y-intercept = -4/3


if you are still confused, i would like you to follow the link below that explains the concept of slope intercept form clearly.
http://www.brightstorm.com/math/algebra/linear-equations-and-their-graphs/writing-equations-in-slope-intercept-form
wrote...
#3
12 years ago
y=mx+b
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