The coordinates of quadrilateral PQRS are P(0,0), Q (a+c,0) , R(2a+c,b), S (a,b). How can you use coordinate geometry to show that one pair of opposite sides is parallel?
A)Find the slopes of PQ and RS, and show that their product is 1
B)Find the slopes of PR and QS, and show that their product are equal
C) Find the slopes of PQ and RS, and show that they are equal
D) Find the slopes of PR and QS, and show that their product is -1
*anyone know the formula so I can try and work it out ?

Question

The coordinates of quadrilateral PQRS are P(0,0), Q (a+c,0) , R(2a+c,b), S (a,b). How can you use coordinate geometry to show that one pair of opposite sides is parallel? 
A)Find the slopes of PQ and RS, and show that their product is 1
B)Find the slopes of PR and QS, and show that their product are equal
C) Find the slopes of PQ and RS, and show that they are equal 
D) Find the slopes of PR and QS, and show that their product is -1 
*anyone know the formula  so I can try and work it out ?

amistre64 · Answer

how do we define parallel lines?

anonymous · Answer

I don't know 😭