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 the value of (y) when (x = 0). The general form of a linear function is (y=mx + b), where (b) is the y - intercept.

Step2: Substitute (x = 0) into (f(x))

For the function (f(x)=4 - 5x), substitute (x = 0) into the function: (f(0)=4-5\times0)

Step3: Simplify the expression

(f(0)=4 - 0=4). So when (x = 0), (y = 4), which means the y - intercept is 4.

Answer:

4 (corresponding to the option "4")