Question

How do you write an equation of a line passing through (-2,-2), perpendicular to y= -1/3x + 9?

Answer 1

The product of perpendicular gradients is equal to -1.

Explanation:

Gradient of line perpendicular to line given is 3. Using general form `y - b = m(x-a)` obtain:

`y + 2 = 3(x+2)`

`y = 3x + 4`