Question

26
f(x) = - 3x + 10
f(x) = - 8
What is the value of x?

Answer 1

9514 1404 393

Answer:

x = 6

Explanation:

Use -8 in place of f(x) and solve the resulting 2-step linear equation in the usual way.

-8 = -3x +10

-18 = -3x . . . . . . . . step 1, subtract 10

6 = x . . . . . . . . . . . step 2, divide by the coefficient of x