Question

SOMEONE PLEASE EXPLAIN!!

Answer 1

To find if something is a parallelogram, they 1 set of line segments need to have the the slope. In this equation, Slope equals x1 + x2 divided by y1 + y2 (Or the other way around, x2 + x1 divided by y2 + y1)

$m = \frac{( - 3 + 1)}{ ( 1 + 3)} = \frac{ - 2}{4} = - \frac{1}{2}$

For your other point, it could be (-4,5)

If this is confusing, please tell me! I'll try to better explain. It also helps to draw out a graph so you can plot the points.