SOLUTION: This is the equation 4x+3Y=12. The instructor picked the three coordinates a. X is 0, Y is 4 - I understand the equation for this b. X is 3 and Y is ) Do not understand how th

Question 134719: This is the equation 4x+3Y=12. The instructor picked the three coordinates
a. X is 0, Y is 4 - I understand the equation for this
b. X is 3 and Y is ) Do not understand how the equation was solved with the Y being 0?
c. X is 4 and Y is -1.33 or -4/3 . Again how was the equation solved to get this coordinate
Thank you
Found 2 solutions by vleith, josmiceli:
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
You are given a function with two variables in it X and Y.
You are then given a value for one variable and asked to find solve for the other one.
1) X = 0

2) Y=0

3) X= 4

Make sense?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You're confusing yourself with language. What your teacher is giving
you are points, not co-ordinates. If you are given a pair like this
(3,7) the 3 is a co-ordinate, the 7 is a co-ordinate, and together
they make up the point, (3,7). If you substitute EITHER the 3 for X
or the 7 for Y in the proper equation, which might be
3y = 7x, you will solve for the other co-ordinate. Getting the language
of algebra straight is very important.
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