Question

F(x) = -5x+5. f(-2)

Answer 1

f(-2) = 15, or y = 15

Explanation:

f(-2) = -5(-2) + 5

f(-2) = 10 + 5, a negative multiplied by a negative will be a positive !

f(-2) = 15

y = 15

Answer 2

f(-2)=15

Explanation:

To find f(-2), we want to find what f(x), or y is, when x is equal to -2.

f(x)= -5x+5

Therefore, we can substitute -2 in for x.

f(-2)= -5(-2)+5

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

Multiply -5 and -2

f(-2)=10+5

Add 10 and 5

f(-2)=15