# Triangle ABC has vertices A(3,1), B(5,7) and C(1, y). Find all y so that angle C is a right angle?

##### 1 Answer

Sep 6, 2016

#### Answer:

The two possible values of

#### Explanation:

For this problem, we need to consider AC be perpendicular to BC.

Since the lines are perpendicular, by the slope formula we have:

Hopefully this helps!