math math math math

Question

If f(x)=-2x-3 what is y if x=-2

Answer 1

you can just plug in x = -2 into the function and then simplify! when i do that here i get

f(-2) = -2(-2) - 3 = 4 - 3 = 1

meaning that when x = -2, the value of y is 1

Answer 2

Hi Wyatt.

To find y if x = -2, replace x by -2 in the expression -2x-3:

if x = -2: y = -2(-2)-3 = 4-3 =1

Answer: if x =-2, y= 1