Question

If two lines are parallel, which statement must be true?
A. Their slopes are reciprocals.
B. Their slopes are opposites.
C. Their slopes are equal.
D. Their slopes are negative reciprocals.

Answer 1

c

Answer 2

Do you know how to look at a graph and figure out the equation of a line just from the y-intercept and some points the line goes through? If I drew a line on a graph, could you figure out the equation of it?

Answer 3

thank you Alexander95

Answer 4

Or you could just take the answer and not know how to do it...I guess that would work, too...(but maybe not on a test)

Answer 5

The slope is given by the tangent of the angle(A,B,..);
In the paralell case the angles are equal so the slope are equal;