In an equation, y varies directly as x
varies. If y = 72 when
x = 12. what is the
value of x when y = 48

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827