Question

Write the equation of a line that is perpendicular to the given line and that passes through the given point.

2x + 4y = –6; (2, 5)

y = -2x + 1
y = 1/2x – 8
y = 2x + 1
y = 1/2x + 1

Answer 1

Question Number One: how do we find the slope of this given line?
Question Number Two: how do we find the slope of a line perpendicular to the given one?
Question Number Three: What's the point-slope formula for a straight line, and why would it be preferable to use that equation?

Answer 2

2
y=mx+b?
y - y1 = m(x - x1)

Answer 3

It is the 3rd one?