The slope of the first equation is -2, you can see it right off.
the slope of the second equation is 2, notice both are in slope-intercept form.
both equations are the equations of a line, so is really just two lines.
because their slope differs, they're not parallel or equivalent, therefore, they lines do meet at some point, and one point only, and therefore, they have 1 solution only.
a system of equations with at least 1 solution, is a consistent system.
a consistent system with exactly 1 solution only, is not just consistent, but also independent.
First you would need to add the amount of people who play only basketball, or only baseball. That would be 18. You would then put it in fraction form as 18/30. You can simplify that fraction to 3/5. In decimal form that would be .6 and as a percent 60%.
