Question

Dada a função f(x) = -2mx + 10: determine m lara que se tenha f(-1) = 20.

Answer 1

f(-1)= -2m(-1)+10=20 => 2m+10=20 =>2m=20-10 => 2m=10 => m=10/2=5

Answer 2

- 2m(-1) + 10 = 20

2m = 20 - 10

2m = 10

m = 10