Question

If f(x) = −5x + 1, find f(−3).

Answer 1

Hint x = -3

Answer 2

We can plug -3 where it says x:
f(-3)=-5*(-3)+1
How do we continue now?

Answer 3

-5(3)+1=-15+1

Answer 4

@nia_maepenix not -15...should be -5(-3) + 1

Answer 5

@nia_maepenix we are looking for f(-3), not f(3)

Answer 6

sorry -5(-3)

Answer 7

15

Answer 8

@ivandelgado Are you there? Is this useful?
f(-3)=-5*(-3)+1

Answer 9

yes

Answer 10

its 15

Answer 11

Be careful, -5*(-3)=15, but we have to add 1, right? Look at the original equation.

Answer 12

its not 15 ?

Answer 13

No, f(-3)=-5*(-3)+1=15+1=16
So f(-3)=16
Do you agree with that ?

Answer 14

Thanks for that medal! :)

Answer 15

yes

Answer 16

?

Answer 17

Any doubt about this problem?
Feel free to ask!