What is the possible discriminant of the graph?
A) -11
B) 0
C) 18
D) 36

Question

What is the possible discriminant of the graph?
A) -11 
B) 0 
C) 18 
D) 36

anonymous · Answer

attachment

anonymous · Answer

without opening the link i know it is positive
know why?

anonymous · Answer

once i open it we see that the discriminant is a perfect square

anonymous · Answer

it is positive because the parabola crosses the x axis twice, meaning it has two zeros
if a quadratic has two zeros the discriminant is positive

anonymous · Answer

it is a perfect square because the zeros are $-4$ and $2$ both rational numbers
if the zeros are rational then the discriminant is a perfect square, like $4$ or $25$ or $36$ (your answer)

anonymous · Answer

ohhhhhh that makes sense @satellite73

anonymous · Answer

this looks like its crossing the x axis twice... and the options are.. 
A) -15 
B) 0 
C) 17 
D) 25 
so..  would it be 25? or am i completely wrong @satellite73