f(x) = 4x - 18
f(-3) - put x = -3 to the equation of the function
f(-3) = 4(-3) - 18 = -12 - 18 = -30
f(x) = -46
We have the equation:
4x - 18 = -46 add 18 to both sides
4x = -28 divide both sides by 4
x = -7
6.5m questions
8.7m answers