Added multiple choice problems to linear_equations_1
Added multiple choice problem type to linear_equations_2
Added multiple choice to linear_equations_3.html
Changed linEqns 1 and 2 to match style of 3
Added multiple choice to linear_equations_4
Weighted the multiple choice problem types to appear less often
Number line is one_step_inequalities is functional
Made custom solution
Finished hints for graphing type in one_step_inequalities
Added graphing type problem to linear_inequalities