what is the y - intercept of the function f(x)=4 - 5x?\n-5\n-4\n4\n5

Explanation:

Step1: Recall y - intercept formula

The y - intercept of a function $y = f(x)$ is found by setting $x = 0$.

Step2: Substitute $x = 0$ into the function

Given $f(x)=4 - 5x$, when $x = 0$, we have $f(0)=4-5\times0$. Since $5\times0 = 0$, then $f(0)=4$.

Answer:

C. 4