"Define variables"
→ The number of student's tickets = a
→ The number of non-student tickets = b
→ the total cost represented = y
"Create an equation that models this situation"
→ y = $5 × a + $10 × b
"Rewrite the equation in slope intercept form"
→ y = $5 × a + $10 × b
→ y = 5a + 10b
→ 250 = 5a + 10b