A line that is perpendicular to another
line have the product of their gradients
equaling -1 {(m(1) x m(2) = -1}
With y = 1/5x + 6. The gradient is 1/5
so, 1/5 x m(2) = -1
m(2) = -5
The line that passes through (2,-3)
has the equation:-
y - (-3) = -5(x - 2)
y + 3 = -5x + 10
y = -5x +10 - 3
y = -5x + 7
