SOLUTION: I need help with Converting this equation 6x+3y=4.5 into a function and find f(5). Please. Show steps so I may understand Thank you.

Question 177489: I need help with Converting this equation 6x+3y=4.5 into a function and find f(5). Please. Show steps so I may understand Thank you.
Found 2 solutions by Mathtut, jim_thompson5910:
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
well, its already a linear function. We do need to write it so as to isolate the y term.
:
3y=-6x+9/2
:
y=-2x+3/2
:
f(5)=-2x+3/2=-2(5)+3/2=-8.5
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Subtract from both sides.

Rearrange the terms.

Divide both sides by to isolate y.

Break up the fraction.

Divide.

Now replace "y" with f(x). The equation is now in function form.

Plug in .

Multiply and to get .

Combine like terms.

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