Question

Is point (1,4) on the line represented by the equation `x + 2y=5`?

Answer 1

No

Explanation:

The point (1,4) has the x value `1` and the y value `4`.
We can simply substitute these values into the equation and if the equation is true then the point lies on the line.

`1 + 2(4) = 5`
`1 + 8 = 5`
`9 = 5`

Obviously, 9 does not equal 5, so the equation is not true, so the point `(1,4)`does not lie on the line `x + 2y = 5`