Question

QUESTION IS BELOW!!!!! please help me. ^.^

Answer 1

d

Answer 2

b shud be the correct one

Answer 3

To determine which of these graphs was the right one, take a point on the line on one of the graphs and plug into the equation.

Answer 4

check the discriminant,its coming to be greater than zero,that means there are two real and distinct value of x for which f(x)=0

Answer 5

For instance on graph A, a point on the line is (2,1), plug it into the equation, if x=2, the equation gives me y=31, so A isn't correct.

Answer 6

now to see the number of positive and negative roots, use descartes's rule of signs

Answer 7

using that rule will give u 2 negative roots,therefore b shud be the correct one

Answer 8

do u want me to explain descartes' rule of signs?

Answer 9

no thank you ^.^ thanks alot really!!!