So, we have the points. Here are the graphs:
So, the answer is d
To find the area of a triangle do base times height and divide that by two. So you would do the bottom line and the side line and multiply that and divide the total in half.
Answer:
Part 1) The height of triangle is 
Part 2) The width of rectangle is 
Step-by-step explanation:
step 1
Find the dimensions of triangle
The area of triangle is equal to

we have


substitute and solve for h



step 2
Find the missing dimension of rectangle
we have that
The height of the triangle is the same as the width of the rectangle
therefore

3 thats where all the negative x and y is located