To determine which among the given points lie in the graph of the given line, substitute the values of x to the function and solve for y. The value of y in the point and the calculated value should be equal.
A. (-3, 21) y = (-3)² - 2(-3) + 6 = 21 EQUAL
B. (-2, 0) y = (-2)² - 2(-2) + 6 = 14 NOT EQUAL
C. (-1, 10) y = (-1)² -2(-1) + 6 = 9 NOT EQUAL
Thus, the answer is letter A.