lets say you have to write 5x+6y=-12 in function form.
when you are writing an equation in function form, you usually solve for f(x) or g(x), but in this case, y is the same as f(x) or g(x). so to write 5x+6y=-12 in function form, you do this:
5x+6y=-12
6y= -5x -12 subtract 5x from both sides
y= -5/6x -2 divide both sides by 6
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y=3x+12
1) Solve the equation for the desired variable. 2) Write it in function notation. For example, if y = 2x + 3, it is already solved for "y"; just rewrite it as f(x) = 2x + 3.
10
f (x) = 2/3 x + 2
If you mean: 2x+3y = 12 then y = -2/3x+4 whereas -2/3 is the slope and 4 is the y intercept