Question

Fill in the missing value in the ordered pair for the equation 5x - 2y = 13.
(3, _)

Answer 1

First, you should rewrite the equation into y = f(x) and then substitute domain value to get range value :D

Answer 2

5x-2y=13, since you already have the answer for the x coordinate (3) you can plug that into the equation:
5(3)-2y=13.
Multiply 5 by 3.
15-2y=13
Then to find out the y value, move everything of the same value over to their own sides.
-2y=13-15
Simplify.
-2y=-2
Because they are both negatives and an x cannot be a negative, divide by -1 to make each positive.
2y=2
y=1

If you want to check the answer to make sure this is correct for the x also, do the same with the y value you just found.

5x-2y=13
5x-2(1)=13
5x-2=13
5x=13+2
5x=15
x=15/5
x=3.

Therefore, (3,1) are the (x,y) values.