Answer:
Step-by-step explanation:
1.
Area of shaded region = Area of external rectangle - Area of internal rectangle

2.
Let the width of the rectangle be x inches.
Therefore, length of the rectangle = (x + 3) inches
A.
Area of rectangle
B.
Width of rectangle = 4 inches
Length of rectangle = 4 + 3 = 7 inches
Area of rectangle = 7*4 = 28 square inches.
Answer:
GH = MN
Step-by-step explanation:
Same as last posted question
Yes, because every x-value corresponds to exactly one y-value
Answer:
-21
Step-by-step explanation:
First of all, you have to calculate slope of that,
m = (y2-y1)/(x2-x1) = (2-0)/(1-(-1)) = 2/2 = 1
Equation would be y-y1 = m(x-x1)
y-2 = 1(x-1)
y-2 = x-1
y = x+1 .... it is the final equation