2006-08-11 10:14:58 · 10 answers · asked by wicked 1 in Science & Mathematics ➔ Mathematics
4x - 6y = -30
-30 = 4x - 6y
6y - 30 = 4x
6y = 4x + 30
y = 2/3 x + 5
Answer : f(x) = 2/3 x + 5 (The answers above are solving it as a function of y)
2006-08-11 10:25:39 · answer #1 · answered by Arkangyle 4 · 3⤊ 0⤋
All but one of the above answers are wrong.
A function of x means that x is the independent variable, meaning you're not solving for x but for y. This is why you always see y = f(x), meaning that y is a function of x. The other posters solve for x, and are actually rewriting the equation as a function of y, which is NOT what your question is asking.
So, y = f(x) = (4x + 30) / 6 = (2/3)x + 5.
2006-08-11 17:29:26 · answer #2 · answered by TOB 3 · 0⤊ 0⤋
4x -6y= -30
4x = 6y-30 (add 6y to both sides)
x = (6y-30)/4 (divide both side by 4)
x = 3y/2 - 15/2 (by further simplification)
2006-08-11 17:23:55 · answer #3 · answered by V/D West 3 · 0⤊ 1⤋
4x - 6y = -30
-4x + 4x - 6y = -4x - 30
0 - 6y = -(4x + 30)
-6y = -(4x + 30)
y = -(4x + 30) / (-6)
y = (2/3)x + 5
2006-08-11 19:16:26 · answer #4 · answered by Anonymous · 0⤊ 0⤋
the equation must be a function of x so i guess it is
y=(30+4x)/6
2006-08-12 07:56:03 · answer #5 · answered by Vinod . 2 · 0⤊ 0⤋
4x-6y=-30 =>
=>4x=6y-30 =>
=> x=(6y-30)/4
2006-08-11 17:18:57 · answer #6 · answered by white_fox362 2 · 0⤊ 1⤋
x = (6y-30)/4
2006-08-11 17:17:42 · answer #7 · answered by achsev 2 · 0⤊ 1⤋
x = (6y-30)/4
2006-08-11 17:17:12 · answer #8 · answered by Anonymous · 0⤊ 2⤋
4x=-30+6y
x=-7.5+1.5y
2006-08-11 17:19:12 · answer #9 · answered by Kels 2 · 0⤊ 1⤋
x = (3y-15)/2
Always simplify your fractions.
2006-08-11 17:20:56 · answer #10 · answered by Taztug 5 · 0⤊ 1⤋