Question

What do u do on this ??

Answer 1

You substitute the X with the domains

Answer 2

Take each of the numbers chosen and replace them for "x" for each equation.

For example, for "a" if you were to choose -3 as "x" you would have
$y = 3( - 3) + 1$
Then solve.
$y = - 9 + 1$
$y = - 8$
So if the Domain is -3, y= -8

Similarly for "b"
If you choose -3, the equation will be
$- 3 = 4 + y$
Solve.
(subtract 6 to the other side)
$- 7 = y$
So if the domain was -3 for "b" y=-7.

Now Just do the same way with the other numbers. Remember, domain means the x value.
You can do it :)