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)

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.
X(x+8)=(x+4)(x+3)
x^2+8x=x^2+7x+12
x=12
original length = 20
original width = 12
next length = 15
next width = 16
Using the formula, rewrite in standard form.
0.4x + y = 0.3
Hope this helps! :)
Answer:
Yes
Step-by-step explanation:
you labelled it correctly. angle a is across from side a, and vice versa. nice job!! :)