Question

Slope is used for which of the following situations?

Slope is used to determine if lines are parallel.
Slope is used to determine if lines intersect.
Slope is used to see if points are collinear.
Slope is used to find the equation of a line

Answer 1

I believe the correct answer from the choices listed above is the second option. Slope is used to determine if lines intersect. From the values of the slope, we can directly say whether the line intersect, are parallel or perpendicular with each other. 

Hope this answers the question. Have a nice day.

Answer 2

Answer:

You will then use slope to determine whether several points appear on the same line; that is, are they collinear?