Use a graphing utility to graph y = ax2 + bx + c related to any five of the quadratic equations, ax2 + bx + c = 0 i n Exercise 1–8. How does each graph illustrate what you determined algebraically using the discriminant?
x2 − 4x − 5 = 0
4x2 − 2x + 3 = 0
2x2 − 11x + 3 = 0
2x2 + 11x − 6 = 0
3x2 = 2x − 1
x2 − 3x − 7 = 0
3x2 + 4x − 2 = 0
Exercise 1
x2 − 4x − 5 = 0
Exercise 2
4x2 − 2x + 3 = 0
Exercise 3
2x2 − 11x + 3 = 0
Exercise 4
2x2 + 11x − 6 = 0
Exercise 5
x2 − 2x + 1 = 0
Exercise 6
3x2 = 2x − 1
Exercise 7
x2 − 3x − 7 = 0
Exercise 8
3x2 + 4x − 2 = 0
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