Question 4 (4 points) Which set of line segments could create a right triangle? (4 points)
a
24, 30, 35
b
12, 18,30
c.
18, 24, 30
18, 24, 35

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.