Question

Find the y-intercept of this linear equation.
y-4x=12
Help please.

Answer 1

y intercept is when x = 0

Answer 2

So replace the x with 0?

Answer 3

bring down the eqn in the form of y/a + x/b =1
here a is y intercept and x is b intercept
other ways could be be bring it in y= mx+c
here c is y intercept
simplest of em (altough all are equalivalent) is put x=0

Answer 4

i meant b is x intercept in 2nd line **

Answer 5

Ohh! Okay. So if I replace the 0 with the x, I will get the y-intercept?

Answer 6

seems right

Answer 7

Well since I'm only finding the y-int, I just mess with the x and not they y?

Answer 8

you can say that..
see,,y intercept means where the graph cuts y-axis..
and as you know,,y axis is nothing but x=0 line
so basically you're solving for the intersection point between the given eqn and x=0

Answer 9

That's so true. So I got 12. Is that correct?

Answer 10

bingo! ^_^

Answer 11

Yay. :) Thanks!

Answer 12

glad to help ^_^