Question

01-Sendo f(x) = 5.x + 4, determine:


a) f(0)


b) x para f(x) = 9​

Answer 1

f(x) = 5x + 4

a. *** f(0)

f(0) = 5 . 0 + 4 = 0 + 4 = 4

b. *** f(x) = 9

9 = 5x + 4

- 5x = 4 - 9

- 5x = - 5 . (- 1)

5x = 5

x = 5/5

x = 1