Parallel and Perpendicular Lines: Solve: 7. Given: P(-4,1), Q(2,3), R(4,9), S(-2, 7).
A. Graph quad PQRS.
B. What is the slope of --PQ?(Suppose to be under the line) and of --PS?(Suppose to be under.)
C. What is the slope of --QR?(Suppose to be under.) and of --PS?(Suppose to be under.)
D.Use slopes to show that the diagnoals of quad. PQRS are perpendicular.
E. What kind of quadrilateral is PQRS? Explain.
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