Question

On the graph of the equation 3x + 2y = 18, what is the value of the y-intercept?
−9
−6
6
9

Answer 1

9

Answer 2

Convert to slope-intercept form.

y = mx + b

3x + 2y = 18

First subtract 3x to both sides:

2y = -3x + 18

Now divide 2 to both sides.

Answer 3

it is 9 do you want an explanation?

Answer 4

TOLD U

Answer 5

@ImAmWavy Please do not give answers, it's against OpenStudy's Code-of-Conduct. We are here to guide the user to the answer, so we need his participation.

http://openstudy.com/code-of-conduct

Answer 6

Don't give away direct answers please :P

And the y-intercept in short, is when x=0.

Answer 7

@iGreen. -3x + 18 / 2y ?

Answer 8

No..we're dividing ONLY 2..not '2y'..

Answer 9

so

y = -3x + 18 / 2 ?

Answer 10

Oh that's right. @Luigi0210 ..we could also plug in 0 for 'x'..which sounds easier.

Answer 11

y = -3x/2 + 18/2 is more like it..but we just write -3x/2 as -3/2x..so what's 18 / 2?

Answer 12

9

Answer 13

Yes, so we have:

y = -3/2x + 9

Now it's in the form of y = mx + b, where 'b' is the y-intercept, so what's the y-intercept here?

Answer 14

9

Answer 15

Thank you

Answer 16

Yep, you got it.

Answer 17

No

Answer 18

*Np