Question

linear equations how to do -3x+y=2?

Answer 1

y-intercept and x-intercept

Answer 2

how do i solve for them?

Answer 3

First, solve for y. The y intercept will be where x=o. Therefore, plug 0 into your new equation and this should yield the y intercept. Likewise, if you plug zero in for y, you should get the x intercept.

Answer 4

y = mx+b

-3x + y = 2 (rewrite it to y-intercept)
y= 3x+2
solve for y-intercept by changing the value of x to zero
y= 3(0) + 2
y = 2
solve for x-intercept by changing the value of y to zero

do the rest :)

Answer 5

so for x is -3(0)+y=2?

Answer 6

or for y do i leave it as 2 in it then solve for x?

Answer 7

it will be:

y = mx+b

y= 3x + 2 (solve for x-intercept by changing the value of y to zero)

0 = 3x + 2

-3x = 2 (solve for x by dividing the coefficient with -3)

x = -2/3

Answer 8

values:

x = -2/3
y = 2

Answer 9

if I was to do this for a different problem would I do the same thing?

Answer 10

yes! Just make sure to solve for y first so you have y=mx+b

Answer 11

yes :)

when you are given relatively same equation, just always solve the y-intercept and x-intercept.

note that y-intercept means the part in the cartesian plane where the line touches the y-axis which, the value of x is zero. And for the x-intercept, it would be the part of the cartesian plane where the line touches the x-axis, which the value of y is zero.

Answer 12

can you give me a example and I try to do it and see if I get it?

Answer 13

http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/converting-to-slope-intercept-form

Answer 14

thank you.

Answer 15

how would i graph -2/3 on a graph? it doesnt have that low

Answer 16

it doesn't support it

Answer 17

oh i see never mind thank you.