Answer:
a =
Step-by-step explanation:
Aside from the standard, quadratic form,
Parabolas can also be written as
Where a is the scale factor, h represents the distance that the parabola has been translated along the x axis, and k represents the distance the parabola has been shifted up and down the y-axis.
Looking at the table, we see that the function appears to be concave up around x = 2. That means that h in this case is 2. The function is shifted down by -4, because the lowest point on the parabola is (2, -4)
Now we have to solve for a using any points on the table besides x = 2
I will use (4, -3) because it's the easiest option
The formula for the area of a trapezoid is:
Substitute:
Simplify:
The area of the trapezoid is 104 cm.
Answer:
c
Step-by-step explanation: