Which of the following equations is not a linear equation?

Select one:

a. 3

x = 1

b. x + y = 4

c. y = 4

d. 2x - y = 1

How many 30 degree angles does it take to make 180

Subtract 55 from the sum of 9g and 4 when g=8

Two children weighing 17 and 20 kilograms are sitting on opposite sides of a seesaw, both 2 meters from the axis of rotation. where on the seesaw should a 10-kilogram child sit in order to achieve equilibrium?

How do I write a complex number in standard form

1) 49 - 3% = what is the answer to THIS question

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.