What is the test that you can do to tell if a graph represents a function?

A. the horizontal line test

B. the vertical line test

C. the expression test

D. the litmus test

The sum of twice a number and 18 less than the number is the same as the difference between - 10 and the number. What is the number?

What are the domain and range of the function f (x) = 1/4 (x^3 + 6x^2 + 5x-4)

What is the unit rate of 12 pencils for $2.64

If 1/3 of a gallon of paint covers 1/9 of a gate, then how many gallons of paint are needed to cover the entire gate?

The unit price of hot dogs is $0.50/hot dog. How much will 12 hot dogs cost?

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.