Question

Question #b248c

Answer 1

`y=-x+6`

Explanation:

A line at `45^o` has a gradient of `1` as equal increments in `x` give equal increments in `y`.

For two perpendicular lines the products of their gradient is `-1`
`m_1*m_2=-1`

As `m_1=1` it follows that `m_2=-1`.

Now use the formula
`y-y_1=m(x-x_1)`
to find the equation of the line

`y-0=-1(x- 6)`
`y=-x+6`