Given:
x = { -1, 0, 2}
2x + 3y = 7
3y = -2x + 7
y = (-2x + 7) / 3
Now,
Lets substitute the every "x" value in the equation.
For x = -1
y = ( -2 (-1) + 7) / 3
y = 3
For x = 0
y = (-2 (0) + 7) / 3
y = 2.33
For x = 2
y = ( -2 (2) + 7 ) / 3
y = 1
So,
Range (y) = {3 , 2.33 , 1}
So,
The answer in ordered pairs is {(-1 , 3) , (0 , 2.33) , (2 , 1)}