9*4.25= 38.25 square inches.
Add up the x points and divided by 2
same to go for the y points
so the and is (4,-2)
Irrational numbers
hope this helped :)
A= (a+b/2) × h
Is the formula for a trapezoid
You seem to have forgotten to add in the y-intercept or slope. For the information you have given, it could be any equation, so long as it passes through the point (2, -1), such as
y = -x + 1