Answer:
Line J and Line K are perpendicular to each other.
Explanation:
To get this answer, pretend like you are going to calculate the slope of both lines. And let's give c and d random values.
c = 1
d = 2
Let's calculate the slope
with these coordinates (0,0) (1,2) and (0,0) (-2,1)
slope formula = y2 - y1 / x2 - x1
line J slope ⇒ 2 - 0 / 1 - 0 ⇒ 2/1
line K slope ⇒ 1 - 0 / -2 - 0 ⇒ 1/-2
the slope of line J is 2 and the slope of line K is -1/2
We know these lines are perpendicular to each other because the slope of the lines is the inverse of one another
Examples of inverse numbers:
3 is the inverse of -1/3
-2/3 is the inverse of 3/2
Extra tip: If two lines are parallel, they have the same slope