Below represents the proof that the quadrilateral QRST is a parallelogram
<h3>How to prove that QRST is a parallelogram?</h3>
The coordinates are given as:
Q = (-1,-1)
R = (2,9)
S = (-4,5)
T = (-7,-5)
Calculate the length of each side using:

So, we have:




The above computations show that opposite sides are equal.
Next, we determine the slope of each side using:

So, we have:




The above computations show that opposite sides are parallel, because they have equal slope
Hence, the quadrilateral QRST is a parallelogram
Read more about parallelograms at:
brainly.com/question/3050890
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Answer:
equation form: x=-131/8y -31/40
Step-by-step explanation:
this is addition/elimination
Answer:
C. -7
Step-by-step explanation:
See the picture for steps :)
Answer:
16
Step-by-step explanation:
Hope this helps sorry if I'm wrong