Direct variation - partner

The amount of money earned on a job is directly proportional to the number of hours worked. If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

In a direct variation, y=39 when x=3. Find the value of y when x=2.

Is this a direct variation?
y=2x

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work.

Which of the given graphs is a direct variation? Options: A, B, C, D

The number of kilograms of water in a person’s body varies directly as the person’s mass. A person with a mass of 90 kg contains 60 kg of water. How many kilograms of water are in a person whose mass is 75 kg?

What is the slope? Options: $2/1 mile drive, $1/2 miles driven, 2 miles driven/$1, 1 mile driven/$2

At what rate did the rain fall? Options: 2 cm per hour, ¹/₄ cm per hour, ¹/₂ cm per hour, 4 cm per hour

A tutoring job pays $222 for ten hours of work. If a tutor were to work for a total of thirty-five hours that week, how much will they make?

Is this proportional?
y = 7x + 3