Which of the following points lies on the graph of y = x2 - 2x + 6? a. (-3, 21) b. (-2, 0) c. (-1, 10)

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.