An equation that defines y as a function of x is given. Rewrite the equation using function notation f(x).
-$$x - 2 y = 18$$
A) $f ( x ) = \frac { 1 } { 2 } x - 9$
B) $f ( x ) = - \frac { 1 } { 2 } x + 9$
C) $f ( x ) = \frac { 1 } { 2 } x - 18$
D) $f ( x ) = - x + 9$

Question

Quizplus · Accepted Answer

To express y as a function of x, solve for y: $x - 2y = 18$ becomes $y = \frac{1}{2}x - 9$. Thus, $f(x) = \frac{1}{2}x - 9$.

An Equation That Defines Y as a Function of X x−2y=18x - 2 y = 18x−2y=18

An Equation That Defines Y as a Function of X $x - 2 y = 18$