The number of years since lena graduated from middle school can be represented by the equation y=a-12,where y is the number of years and a is her age. is the relationship between the number of years since lena graduated and her proportional or non proportional?

Without graphing the linear functions, find the coordinates of the point of intersection of their graphs: y=3x−11 and y=4

Which math sentence can be used to determine if the triangle is a right triangle?

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.)