What is the y-intercept of the plane whose equation is 4x + 5y - z = 20

Question

anonymous · Answer

Please explain step-by-step in a simple way. My teacher did not go over this AT ALL so I'm lost. The book is not very informative on this chapter either. 

Possible answers:
A) (0, 4, 0)
B) (0, 0, 4)
C) (5, 0, 0)
D) (0, 5, 0)

vocaloid · Answer

to find the y-intercept, let x = 0 and z = 0, then solve for y

anonymous · Answer

Lol i just came here because I liked your profile pic Amanda xD

vocaloid · Answer

still there?

anonymous · Answer

I need..a very deep explanation.

vocaloid · Answer

look at your equation

vocaloid · Answer

4x + 5y - z = 20

substitute "0" for x, and "0" for z

anonymous · Answer

4x + 5y - z = 20

Would that end up looking like 5y = 20 o.o

vocaloid · Answer

yes! now solve that for y

anonymous · Answer

y = 4?

vocaloid · Answer

yup! that means your intercept is (0,4,0)

anonymous · Answer

Well that wasn't so bad. Thank you! :) I have a few other questions I need assisted on if you're interested, or I can open up a new question.

vocaloid · Answer

I need to get going, tag someone if you need help

vocaloid · Answer

Directrix and welshfella are online now, they're really good helpers

anonymous · Answer

ok, thanks for your help :)