What is the possible discriminant of the graph?

Question

anonymous · Answer

attachment

anonymous · Answer

A. -11	
	 B. zero	
	 C. 18	
	 D. 36

muzzack · Answer

first two are out because this has two real zeros

muzzack · Answer

if the discriminant is a perfect square, the the zeros will be rational number it looks like your zeros are not rational

anonymous · Answer

So what do I do next to determine the answer

muzzack · Answer

when you use the quadratic formula you take $\sqrt{b^2−4ac} $ as part of it. if $b^2−4ac=25$ then you would get 5 and so your zeros would be integers or fractions

paki · Answer

@AydenCarpenter14 please have a look here... hope it will help you... http://www.purplemath.com/modules/quadform3.htm

muzzack · Answer

but any number with a finite number of decimals is a rational number,  but this problem looks like it was made up by some math teacher of course the discriminant could be 25 and the zeros could be some fractions the question is not a good one

muzzack · Answer

this is too complicated im sorry

campbell_st · Answer

well the roots are real and rational... 

so the discrimimant was a perfect square... 

select the perfect square

anonymous · Answer

would it be 36 @campbell_st

campbell_st · Answer

that would be my choice

anonymous · Answer

Thank you! Can you help me with one more?

campbell_st · Answer

if you post it as a new question I'll look at it