This table represents a proportional relationship between x and y. x 0 4 8 12
y 0 5 10 15
What is the constant of proportionality, k?

Enter your answer as a simplified fraction in the box.

k =

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10