SOLUTION: Three points that form the vertices of a triangle are: (-4,3), (-7, -1), (3, -2) Use the distance formula to determine if the triangle is a right triangle. Please explain in

Question 342420: Three points that form the vertices of a triangle are: (-4,3), (-7, -1), (3, -2)
Use the distance formula to determine if the triangle is a right triangle.
Please explain in detail how to get the answer.
Solution manual is saying to use the Slope calcualtion m = (y sub2 - y sub1) / (x sub2 - x sub1).
I thought the distance formula was d = square root of (x sub2 - x sub1) + (y sub2 - y sub1)???

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Three points that form the vertices of a triangle are: (-4,3), (-7, -1), (3, -2)
Use the distance formula to determine if the triangle is a right triangle.
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The distance is:
diffy = difference of y's
Subtract, then square.
For (-4,3) and (-7,-1):

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Can you finish it?

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