Question

what is the y-intercept of the graph of 4x+2y=12

Answer 1

change it to the form y = mx + b first

Answer 2

The y-intercept is the value of the equation when x=0. So, set x=0 and then solve the equation.

Answer 3

put it in the form y = mx + b

-2y = 12 -4x
y = -6 +2x, y = 2x - 6

y-intercept (when x=0) y = -6 that is your first point
your slope is 2, so when x=1, y= -4 two points define a line.

the ordered pairs

x y
0 -6
1 -4
2 -2
3 0
source: http://answers.yahoo.com/question/index?qid=20090303155431AAKRS71

Answer 4

that works too :) probably easier

Answer 5

thank you!

Answer 6

@Rohangrr 2y should not be negtive..

Answer 7

how do i change it to the y=mx+b form? sorry this is cst review and im currenly talking precal ;~; forgot all about algebra

Answer 8

you have 4x + 2y = 12

to change it to y = mx + b isolate y

2y = 12 - 4x

now divide everything by the coefficient of y (which is 2)

so y = 6 - 2x

rearrange it...

y = -2x + 6

the constant is your y-intercept.which in this case is 6