Question

Which of the following points is in the solution set of y < x2 - 4x + 3?



(-3, 0)


(1, 0)


(2, -1)

Answer 1

a and b are correct :P

Answer 2

Put the points into the equation and solve to see if it makes sense.
ie. (-3,0) = (x, y)
y < x2 - 4x + 3
0 < -3*2 - 4*-3 + 3
0 < (-6) - (-12) + 3 (I just put brackets so you can see)
0 < 9

Indeed, 9 is bigger than 0, so that point works.