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

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Question 259387: What is the y-intercept of the plane whose equation is 4x + 5y + z = 20?
Found 2 solutions by richwmiller, Edwin McCravy:
Answer by richwmiller(17219) About Me  (Show Source):
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!

4x+%2B+5y+%2B+z+=+20?

The y-coordinate of the y-intercept of a plane is what you get 
when you substitute 0 for the other two letters and solve for y.

4%280%29%2B5y%2B%280%29=20
0%2B5y%2B0=20
5y=20
y=4

So the y-intercept is the point (x,y,z) = (0,4,0)

Edwin