Answer:
Undefined.
Step-by-step explanation:


The denominator is 0. Therefore, the slope is undefined.
Answer:
7
Step-by-step explanation:
Answer:
Option E
Step-by-step explanation:
The standard equation of circle is:- (x-h)² + (y-k)² = r²
where (h,k) is center point and r is radius
If radius r is decreased then also (h,k) remains same, only r² increases
Equation given in question is x² + y² + Cx + Dx + E=0
So, C and D will remain same but E will increase
Answer:
The equation showing this situation is 
Step-by-step explanation:
Given : A quadratic equation of the form
has one real number solution.
To find : Which could be the equation?
Solution :
A quadratic equation in form
has a solution
called a quadratic formula in which the roots are one real,two real or no real is determine by discriminant factor.
Discriminant is defined as to determine the number of roots in a quadratic equitation has following rules :
1) If
there are two real roots.
2) If
there are one real roots.
3) If
there are no real roots.
According to question,
A quadratic equation of the form
has one real number solution.
So, The equation showing this situation is 
All you have to do is add exponents when multiplying like monomials. So it's just 4^2