down
Upwards.
2,4
The question contains an expression, not an equation. An expression does not have a graph. Furthermore, even if it were an equation, its form suggests that it would be a linear equation and a linear equation does not open in any direction.
It is not possible to answer the question because there is no equation - only an expression.
It is a straight line with gradient -A/B and intercept C/B.
y=x+1 there for answer is 2
-2x plus 3y equals 1
4
(0,2) is one possible answer.
y = -0.5x plus or minus any number
there is no right answer