Does this table represent a function? why or why not?

A) No, because one x-value corresponds to two y-values.

Step-by-step explanation:

A function is a relation in which each element of the domain (x) is mapped to only one element of the range (y).  This means if any x is mapped to more than one y (if any x is used more than once) then the relation is not a function.

In this relation, the x-value of 2 is mapped to more than 1 y value; it is mapped to both 1 and 4.  Thus it is not a function.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

i need a picture

step-by-step explanation: