SOLUTION: Rewrite each equation as a function of x. Problem: -3x + 4y = 11 4y = 3x + 11 y = -3/4x + 11 f(x) = -3/4x + 11

Algebra ->  Linear-equations -> SOLUTION: Rewrite each equation as a function of x. Problem: -3x + 4y = 11 4y = 3x + 11 y = -3/4x + 11 f(x) = -3/4x + 11       Log On


   

Question 107314This question is from textbook
: Rewrite each equation as a function of x.
Problem: -3x + 4y = 11

4y = 3x + 11
y = -3/4x + 11
f(x) = -3/4x + 11
This question is from textbook

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Almost. A couple of mistakes.
4y+=+3x+%2B+11
cross%284%29y%2Fcross%284%29=%283x%2B11%29%2F4
y=%283x%29%2F4%2B11%2F4
You went from 3x to -3x/4 when you divided by 4. It should remain positive.
Also, you didn't distribute the division by 4 to the 11.
You can always check your result using the original equation and the derived equation.
Choose x=0 and use your original equation.
4y+=+3x+%2B+11
4y+=+3%280%29+%2B+11
4y+=11
highlight%28y+=+11%2F4%29
With your equation
y+=+-3%2F4x+%2B+11
y=-3%2F4%280%29%2B11
y=11
With the revised equation,
y=%283x%29%2F4%2B11%2F4
y=3%280%29%2F4%2B11%2F4
highlight%28y=11%2F4%29