What is a proportional equation

The conversion of square feet to square yards can be represented by direct variation. Three square yards are equivalent to 27 square feet. Let y represent the number of square yards and x the number of square feet. Then y varies directly with x.

1.$37.65 dinner, 15% tip 2. $97.55 business breakfast, 15% tip

A cargo ship traversed Lake Ontario from Hamilton to Kingston, a distance of 300 km, in 10 h. The equation that relates distance d to time t is. what is the proper equation.

You and a friend are playing a game by tossing two coins. If both coins land on heads, you win. If the coins land on different sides, your friend wins. The table shows the possible outcomes.

5. At a recent Bach concert, total ticket sales were $1,659 Adult tickets cost $9.00 and youth tickets cost $6.00. The number of adult tickets sold was sixteen more than three times the number of youth tickets.

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.