1)y = 1/2x+4
y = -2x-1
2)y-x=-7
y=-3x + 1
3)y = x
y = 2x – 1 write your answer in coordinates

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.

X+y=-4 x-y=2 use elimination with adding and subtraction