Question

Determine whether each ordered pair is a solution of the system.

5-7x+2y2 =-10
1-5x-2y =-22

a) (-4,-6)
b) (6,4)

Answer 1

According to the system:

5 – 7x + 2y² = -10

1 – 5x – 2y = -22

______________

a) No ; (4, 6) is not a solution to the

system. This point does not touch either equation.

b) No ; (6, 4) is not a solution to the system. This point does not touch either equation.

Solutions:

`( (122 - 3 √(101))/(25), ( - 7 +3 √(101))/(10)) ≈ (3.674, 2.315) \\ ( (122 + 3 √(101))/(25), ( - 7 - 3 √(101))/(10)) ≈ (6.086, -3.715)`

x = ( 122 ∓ 3√101 ) / 25 ≈ 3.674 or 6.086

y = ( -7 ± 3√101 ) / 10 ≈ 2.315 or -3.715