# Math Help - need help functions

1. ## need help functions

Solve each equation if the domain is (-2,-1,0,2,4)

y=-4x+10

4-2x=5y

-x+3y=1

2. Originally Posted by gracy
Solve each equation if the domain is (-2,-1,0,2,4)

y=-4x+10

4-2x=5y

-x+3y=1
Just substitute each element of the domain into the equation and that gives you the range.

The first:
$y = -4x + 10$

So inputting the domain we get a range of: (18, 14, 10, 2, -6)
Thus the solution set is {(-2, 18), (-1, 14), (0, 10), (2, 2), (4, -6)}.

The other two are done the same way.

-Dan