Question

Write an equation of a line perpendicular to line CD below in slope-intercept form that passes through the point (−1, 6).
Line CD is shown. C is at 1, 1. D is at 3, 5

y = −0.5x − 5.5
y = −0.5x + 5.5
y = 2x + 13
y = 2x − 13

Answer 1

First find the gradient of line CD

Answer 2

But what's the formula

Answer 3

You have a point which is:
(−1,6)

Remember that points are written as:
(x,y)

Now it is the plug and play game:
y=−0.5x+5.5

x=−1,y=6

6=−0.5(−1)+5.5

6=0.5+5.5

6=6

6=6 is true, thus your answer is:
A) y=−0.5x+5.5

Answer 4

Okay thank you @Nurali

Answer 5

My Pleasure.