There is no definite way to answer this question without further, more detailed information. I am truly sorry I am unable to answer this with the information provided.
SOLUTION
Write out the equation

To solve this system of equation, the aprropriate method will be substitution
Substitute the expression for y into the second equation for y, we have

Expand the paranthesis we have

Divide both sides by 4, we have

Since the value of x has been obtained, we substitute into the first equation

Therefore
x = -3, y= -4
No 6.2 could be put as 6.20 and 1.75
6 is bigger than 1