What is a zero of the function f (x) = 5x-20

The zero of the function can be found by solving f (x) = 0

Solution to f (x) = 5x-20

To find the zero of the function f (x) = 5x-20

Let f (x) = 0

5x - 20 = 0

Using Addition Property of Equality, add 20 to both sides of the equation

5x - 20 + 20 = 0 + 20

5x = 20

Using multiplication Property of Equality, multiply both sides with 1/5

5x (1/5) = 20 (1/5)

x = 4

Therefore the zero of the function f (x) = 5x - 20 is {4}