The value of c is 
Explanation:
Given that the trinomial is 
We need to determine the value of c such that the trinomial is a perfect square.
The value of c can be determined using the formula,

From the trinomial, the value of b is given by

Substituting the value of b in the above formula, we have,

Squaring both the numerator and denominator, we have,

Thus, the value of c is
which makes the trinomial a perfect square.
The answer is a have a great day/night !
Discrete data is the answer
Using y2-y1/x2-x1 m=24/6 so the slope is +4
No. For two lines to be perpendicular their slope must be the negative reciprocals of one another, mathematically:
m1*m2=-1
So if the slope of one line is negative, the line perpendicular to this must be positive by definition.