Figure out how to do this! you!

given that y is proportional to x what linear equation can you write if y is 16 when x is 20?

a.) y=20x

b.) y=5/4x

c.) y=4/5x

d.) y=0.6x

show how you solve this
i give !

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?