Answer:
27.52 percent
Step-by-step explanation:
Percentage increase = (new - original)/ original * 100
new = 318270
old = 249583
Substitute in what we know
percentage increase = (318270-249583)/249583 *100
= (68687/249583) *100
.275207045*100
27.5207045 percent
Check the picture below.
you can pretty much count those lengths off the grid.
recall that A = 1/2 bh.
It would be the first one (x,-y) because say for example you take the point of v1 (4,-1) and reflect across x axis you get (4,1) for v
Depends on what kind of a triangle