When using substitution the answer to y0.5x plus 2 -y-2x plus 4 is y = -2 (x-1.
Thanks to the browser, it is not possible to tell what the inequalities are.
Without any equality signs the given expression can't be considered to be straight line equations.
It is an expression in two variables, x and y.
If you mean: y = 2x+5 then it is a straight line equation.
If you mean: y = 6x+11 and y = 2x+7 Then by substitution: x = -1 and y = 5
The y value will equal 15, when x = 7
Since there is no equality (or inequality) sign in the question, there is no equation or inequality) and therefore nothing which can be solved.
y2x - just double the coordinate of y to get x. xy12 - i have no idea
If you mean: y = x^2+4x+3 and y = 2x+6 Then the solution is: x = 1 or x = -3
If you mean: y = 2x and 2y = -x+4 then they are positive and negative straight line equations
If you mean: y = 2x+8 then it is a straight line equation whereas 2 is the slope and 8 is the y intercept
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