Answer:
f(- 1) = 7
Step-by-step explanation:
To evaluate f(- 1) substitute x = - 1 into f(x)
f(- 1) = 5(- 1) + 12 = - 5 + 12 = 7
For this case we have a function of the form[tex]y = f (x)[/tex], where:
[tex]f (x) = 5x + 12[/tex]
We must find the value of the function when x = -1.
That is, [tex]f (-1)[/tex]:
[tex]f (-1) = 5 (-1) +12\\f (-1) = - 5 + 12[/tex]
Different signs are subtracted and the sign of the major is placed:
[tex]f (-1) = 7[/tex]
Answer:
[tex]f (-1) = 7[/tex]
