Question

If y=8 when x=4 find y when x=5?

Answer 1

`y=10` when `x=5`

Explanation:

There are a couple of ways that I know of solving this:
1. The algebraic method:
`y=8` when `x=4`
So when `x=1` (four divided by four), `y=8/4` (eight divided by four) which is `2.`
So now we know that when `y= 2` when `x= 1`
when `x=5 (1*5)` then `y= 2 *5`
`y=10.`

2.The 'logical' method
`y=8` when `x=4`
`y` is `x` times `2`
when `x=5, y= 'x` times `2` which is `5*2=10`
`y=10`