The y-intercept is (0,-11), which is option C.
The solution is you need to subtract the y axis and x axis
X² - 64 = 0
(x - 8)(x + 8) = 0
x = - 8, 8
Your other solution is - 8
The other two angles would also be 120 and 40 because the opposite angles of parallelograms are equal
