On the number line ,where would 6.2 be located ?

The correct answer is C. Between 6.1 and 6.3.

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this