Question

Is triangle ABC a right triangle?

no, because none of the slopes of the line segments forming the legs are opposite reciprocals
no, because none of the slopes of the line segments forming the legs are equal
yes, because BC is perpendicular to AC
yes, because AB is perpendicular to AC

Answer 1

Yes, because BC is perpendicular to AC

Explanation:

You have to find the slope of equation by using the equation: m=Y₂-Y₁/ X₂-X₁

Next, you identify if the two slopes are opposite reciprocals.

IF they are opposite reciprocals than the lines perpendicular.