Given the 3 points you entered of (7,21), (7,19), and (7,5), calculate the quadratic equation formed by those 3 points

b represents our x-coordinate of 7

a is our x-coordinate squared → 7

c is always equal to 1

d represents our y-coordinate of 21

49a + 7b + c = 21

f represents our x-coordinate of 7

e is our x-coordinate squared → 7

g is always equal to 1

h represents our y-coordinate of 19

49a + 7b + c = 19

j represents our x-coordinate of 7

i is our x-coordinate squared → 7

k is always equal to 1

l represents our y-coordinate of 5

49a + 7b + c = 5

The following practice problem has been generated for you:

Calculate the centroid of a triangle with vertices at (7,21), (7,19), and (7,5)