Answer: h=7
Step-by-step explanation:
By definition the function in vertex form is:
Where (h,k) is the vertex of the parabola.
You must group the terms that contain the same variable in the function:
Complete the square as following:
Now you must rewrite it as following:
Then:
h=7
The area of a triangle is the amount of space on the triangle
The expression that represents the area of the triangle is
The coordinates of the triangle are given as:
The area (A) of a triangle from its coordinates or vertices are:
Substitute values for x's and y's
Hence, the expression that represents the area of the triangle is
Read more about areas of triangles at: