Question

If f(x) = −4x − 1, find f(−2).

Answer 1

\[f(\Box)=-4\times \Box -1\]
put \(-2\) in the box

Answer 2

= 7

Answer 3

\[f(-2)=-4\times (-2)=8-1=7\]

Answer 4

how??

Answer 5

replace \(x\) by \(-2\)
your first step it to write
\[-4\times (-2)-1\]

Answer 6

ohhh i got it now

Answer 7

then \(-4\times (-2)=8\) so you get \(8-1\) and then \(8-1=7\)

Answer 8

it is very easy to solve just substitute..