Answer:

Step-by-step explanation:
The formula of a slope:

If
m > 0, then a line is rising
m < 0, then a line is falling
m = 0, then a line is horizontal
m is undefined, then a line is vertical
<h2>a.</h2>
(2, 1) and (4, 5)

<h2>b.</h2>
(-1, 0) and (3, -5)

<h2>c.</h2>
(2, 1) and (-3, 1)

<h2>d.</h2>
(-1, 2) and (-1, -5)

I think the result are 1 and 4
-2/3, -08,-3/5,-3/4...............
Here is your answer

REASON:
: The opposite sides of a parallelogram are equal.
So, in above given figure
(measures of opposite sides)




HOPE IT IS USEFUL
599.99
599.98
599.97
599.96
599.95