Which of the following equations is an example of inverse variation between the variables x and y?

Find the solution of system of equation y= x-4 y=4x+2

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)