Question

(2,?) is on the line 4x - 5y = -7 Find the other half o the coordinate

Answer 1

If you would like to find the other half of the coordinate, you can calculate this using the following steps:

(x, y) = (2, ?)
x = 2
y = ?

4 * x - 5 * y = - 7
4 * 2 - 5 * y = - 7
8 - 5 * y = - 7
8 + 7 = 5 * y
15 = 5 * y /5
y = 15 / 5
y = 3

The correct result would be y = 3.

Answer 2

The answer is 3. Just substitute the x coordinate to the equation of the line, which is 4x-5y=-7. So in substituting 2 to x, you’ll have a working equation of 4(2)-5y=-7. Isolate y which will give you y=-7-8/-5. The value that you’ll get would be 3.