The slope of the line is positive 1
The answer of 12 to 13 is almost correct - you only forgot the - signs
As for the decimal estimate, take the square root of 12 (144) and the square root of 13(169) and because 150 is closer to 144 than 169 we can guess that the decimal is about -12.2
Answer:
The discriminant is 0.
Step-by-step explanation:
we know that
In a quadratic equation of the form
The discriminant is equal to
If D=0 -----> The equation has only one real solution
If D>0 ----> The equation has two real solutions
If D<0 ----> The equation has complex solutions
In this problem
If the equation has only one intercept (x=6)
then
The equation has only one real solution
therefore
The discriminant is 0.