Question

Compute the exact value of the function for the given x-value without using a calculator. f(x) = 4x for x = -1

Answer 1

So when x = -1, you just substitute the variable x to -1.

"4x" means 4 times x, so when x is replaced to -1, that would be 4 times -1.

f(-1) = 4(-1) = -4

So the value of function at x = -1 would be -4.

Hope this helps.