If you get a false statement, then the ordered pair is not a solution.
Take a look at this tutorial and learn how to determine if an ordered pair is a solution to an inequality!
But the amount of batter in those groups is just $\frac$ and the amount of frosting is just $\cfrac$.
With that in mind one arrives at the inequality mentioned.
To graph a vertical line that goes through a given point, first plot that point.
Then draw a straight line up and down that goes through the point, and you're done!
Then draw a straight line left and right that goes through the point, and you're done!
When you're learning about linear equations, you're bound to run into the point-slope form of a line.
To solve such a system, you need to find the variable values that will make each inequality true at the same time.
This tutorial will introduce you to systems of inequalities.