Question

Which of the ordered pairs (3, 1), (0, –4), (–4, 0), (–3, –7) are solutions for the equation x – y = 4?

Answer 1

`(0,-4)` and `(-3,-7)`

Explanation:

You just have to sub each point into the equation `x-y=4`

ie Sub `(3,1)` into the equation

LHS: `3-1` = `2`
RHS: `4` which doesn't equal to LHS

Therefore, it isn't a solution of the equation

Sub `(0,-4)`

LHS: `0-(-4)` = `0+4` = `4`
RHS: `4` which equals to LHS

Therefore, it is a solution of the equation