PLEASE HELP question 8 Will mark as Brainliest

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?

What is the equation of a line that passes through points (0, 4) and (-4,-8)?