Area = base * height. This is because you can move the triangle on the left to the right side, forming a rectangle, which has an area of base * height.
For this shape, the area is 2.8m * 6.2m = 17.36 m^2. I don't see that answer listed, nor are the answers in m^2, which is strange.
Answer:
Step-by-step explanation:
A rotation of -90 degrees about the origin is equivalent to a clockwise rotation. Point A, initially at (2, 0), would become point A', (0, -2).
The perimeter would be 16 units
Y= kx+b, k-slope, b-intercept
so
2=k*1+b
7=k*2+b
12=k*3+b
17=k*4+b
solve these two equation:
2=k*1+b
7=k*2+b
second minus first is 7-2=2k-k+b-b
5=k,
so we know k=5
put this in any equation 2=5*1+b
b=2-5
b=-3
check this in
12=5*3-3 - right
17=5*4-3 - right
Answer: y=5x-3
