Solve the system of equations algebraically for real values of x and y.
{ x+y=16 x^2 + y^2 = 128
a. (6, 6)
b. (8, 6)
c. (9, 8)
d. (8, 8)
e. no solution
Solve the system of equations by graphing.
{ x^2 - 13x - y =-40 x^2 - 13x + y =-40
a. (5, 0), (5, 0)
b. (8, 0), (8, 0)
c. (5, 5), (8, 0)
d. (0, 5), (0, 8)
e. (5, 0), (8, 0)
