Line q will be graphed on the same grid. The only solution to the system of linear equations formed by lines n and q occurs 3
when x = - and y = 0
2
Check the boxes below to indicate if the equation matches the graph of line q or does not match the graph of line q.
Does not
#
Matches
Equation
match
1
3
y = 2
2.
D
هم شن
N
2
5
3y = -x +1
2+1
2.
4
y =
3
2
D
3

So, if x*y > than zero, we know that neither x nor y can be zero, because anything multiplied by zero is equal to zero.  Now, we also know, that a negative times a negative is positive, and a positive times a positive times a positive is positive.

So,

x and y can either both be negative, or both be positive.  

They cannot be zero, or one negative, one positive.

Hope this helps!