Answer:
x=1
Step-by-step explanation:
Since both lines have 1 as it x value, x=1 is the line
Y=-x+b
plug in x = 4 and y = 1 to find b
1 = -4 + b and we know that if you add 5 and -4 you get 1. So ...
5 = b so if we plug that in
y= -x + 5
which is the same as y + x = 5, So it would be A
Trapezoid Area = (Bases / 2) * Height
20 cm² = 5 * Height
Height = 4 cm
It will be less than the first factor.
