Question

how would you find the slope of a line that is perpendicular to y=-3x+1; that passes through 2,2

Answer 1

Perpendicular lines have slopes that multiply to -1.

The line y = -3x+1 has a slope of -3. So, a line perpendicular to it will have a slope of?

Answer 2

oh ok 3 then thanks had a brain fart

Answer 3

1/3

Answer 4

1/3 * -3 = -1

Answer 5

oh ok

Answer 6

Let slopes of the lines be m1 and m2. When they are perpendicular, m1 * m2 = -1.

In our case, you are given m1 = -3.

Since -3 * m2 = -1, m2 = 1/3.