Find the equation of the line.
Use exact numbers.
y=___x+_

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.