It’s 0 because it’s a horizontal line and doesn’t have any change.
we are given

To find x-intercept means we have to find zeros
and for finding zeros , we will use quadratic formula
and we have it has two x-intercepts
so, it's discriminant must be greater than 0
so, we will find discriminant

now, we can compare with


and then we can find a , b and c

now, we can find D


It has two x-intercepts
so,

now, we can solve for m


............Answer
The first one is correct (-2/3, -1/2, 7/12, 0.82) pls mark branliest