help me please with geomertry?

Question

i have a dead line to turn this in and its running out. it ends in like 20 minutes. the question is:

Line c contains the points (2,-2) and (-4,1)

a) What is the slope of a line perpindicular to line c?
b) What is the y-intercept of the line perpindicular to line c that contains (1,2)?

please help

Answer 1

Well, the slope of line c is 3/-6 = -1/2.
(The slope = difference of y coords/difference of x coords.)
So the slope of a line L perpendicular to c is 2.
(If two lines are perpendicular and neither
is vertical the product of their slopes is -1)
So we have y = 2x + b is the equation of L.
2 = 2*1 + b, b = 0.
The y intercept is 0.
Sorry I didn' t get to this in time!