Which color is the line that represents an equivalent ratio? How can you tell by looking at the lines? A) blue; The graph is a v
ertical line. B) orange; The graph is a horizontal line. C) pink; The graph of the pink line passes through the origin. D) green; The graph of the green line intercepts the y-axis at a point other than (0, 0).
To solve questions of these sorts, bring all the terms to one side & simplify it leaving x alone in the other side of the equation (other side of the equal to sign). After simplification you'll get the value of x.
Remember that the signs & operations will change when you bring a term to the other side of the equation.
So, addition will become subtraction, subtraction will become addition, multiplication will become division & division will become multiplication.