Question

Explain why these two lines have no solution: y = 4/5x + 1 and y = 4/5x - 3

Answer 1

Both
`(4)/(5)x+1` and
`(4)/(5)x-3` are equal to
`y`, so they equal each other:

`(4)/(5)x+1=(4)/(5)x-3`

`\rightarrow1=-3`
But this can't happen.

So there is no solution to the equations.