Question

How do you write an equation in point slope form given (3, 5); slope = -9?

Answer 1

The equation will be `y = -9x + 32`.

Explanation:

Since we know that the slope is `-9` we can write:
`y = -9x + b`

Then plugging in `(3,5)` will let us solve for `b`.
`5 = -9*3 + b`
`5 + 27 = b`
`b = 32`

So the equation is:
`y = -9x + 32`