Question

an outdoor swimming pool cost $8 per day to visit during the summer there is also a $25 yearly registration fee is the total cost proportional to the total number of days visited

Answer 1

No. a proportional relationship has to cross the origin and with the added $25 registration fee the answer would not cross the origin. you can also tell by the linear equation it it was proportional the equation would either be y=mx+0 or just y+mx when m is y divided by x but your equation is y= 8x+25