Question

The equation of line CD is (y−3) = − 2 (x − 4). What is the slope of a line perpendicular to line CD?
A.1 over 2
B. 2
C. negative 1 over 2
D. −2

Answer 1

you know what the slope of this line is ?

Answer 2

hint: it is in the "point-slope" form, so you can read the slope directly from the equation

Answer 3

when you will solve the above equation you will get
y-3 =-2x + 8
y = -2x -11.....eq#1
here -2 is your slope
now for perpendicular slope will be
+1/2
now put 1/2 at the place of -2

Answer 4

y= 1/2 x -11
2y = x - 22
x-2y-22=0 is the correct answer

Answer 5

thats not one of the answer choices??????

Answer 6

A is the correct answer
I just take out the equation of perpendicular line

Answer 7

i chose that one last time and it said i was wrong

Answer 8

A is correct answer
I am 100% sure

Answer 9

how -1/2
- signs will be cancel from each sides

Answer 10

you're correct! option A (1/2)