Question

What is the equation of the line with slope `m=-7/9` that passes through `(9,-4)`?

Answer 1

`x`+`63y` = `-243`

Explanation:

(Use the equation maker)
`y--4` = `-7/9` (`x-9`)
Take things to the other side one by one
`63y+252=-x+9`
`x+63y=-243`

(I drew this line on GeoGebra and it all worked :)