On parallelogram PQRS below, if P is located at (-1, 6) and S is located at (-7, -3), what is
the slope of QR ?

this is a very good question

step-by-step explanation:

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the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64