Write an equation for a linear function that whose graph has slope $- \frac { 1 } { 2 }$ and y -intercept (0,4) .
A) $f ( x ) = \frac { 1 } { 2 } x - 4$
B) $f ( x ) = 2 x - 8$
C) $f ( x ) = - \frac { 1 } { 2 } x + 4$
D) $f ( x ) = - \frac { 1 } { 2 } x$

Question

Quizplus · Accepted Answer

The slope-intercept form of a linear function is given by $f(x) = mx + b$ where m is the slope and b is the y-intercept. We are given that the slope is $- \frac{1}{2}$ and y-intercept is (0,4), which means that b = 4. Thus, the equation of the linear function is $f(x) = - \frac {1}{2}x + 4$, which is choice C.

Write an Equation for a Linear Function That Whose Graph −12- \frac { 1 } { 2 }−21​

Write an Equation for a Linear Function That Whose Graph $- \frac { 1 } { 2 }$