Question

Find the equation of the line described. perpendicular to y = 5x + 3; passing through the point (4, 2).

Answer 1

The slope will be -1/5, so you can use the point-slope form, which is y - y1 = m (x-x1).

enter everything in so you get the equation y -2 = -1/5 (x - 4) :

y - 2 = -1/5x + 4/5
y + 1/5x = -1 1/5

the answer is y + 1/5x = -1 1/5