I need to know the degrees equaled to the question

Answer this question! 30 points and brainliest!

Find the equation using the point (4,8)

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)