maddymcg408 maddymcg408

18-08-2021
Mathematics

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5.
For which discriminant is the graph possible?

A. b2 – 4ac = –1
B. b2 – 4ac = 0
C. b2 – 4ac = 4

5 For which discriminant is the graph possible A b2 4ac 1 B b2 4ac 0 C b2 4ac 4 class=

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colinspurdle colinspurdle

18-08-2021

C is the only one that will give two real roots (cross the x axis twice)

A has no real roots - the square root of -1 is not real
B has two identical roots - the parabola touches the x axis at one point

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