Thanks to the browser, it is not possible to tell what the inequalities are.
11
It is an expression, not an equation and so cannot be proportional nor non-proportional.
Without a second independent equation, it's not a 'system' yet.
If you mean: y = 2x-10 then it is 2x-y-10 = 0
Thanks to the browser, it is not possible to tell what the inequalities are.
y2x - just double the coordinate of y to get x. xy12 - i have no idea
11
(4,1)
y2x is an expression, which cannot be graphed because we don't know what it equals. y = 2x, y2 = x, and 2y (or y2) = x are all things that could actually be graphed.
It is an expression in two variables, x and y.
5
Proportional is when it is proportional.
6
If you mean y = 2x then it is a straight line equation
A is proportional to C4.
It is an expression, not an equation and so cannot be proportional nor non-proportional.