How to solve this problem step by step

4

Step-by-step explanation: if 2 times y(2) is 4 what plus 4 equals 12...8 right? but you have to take 2 and multiply it by 4 in order to get 8. So the answer is 4. Hope this helps! :)

4

Step-by-step explanation:

Given

when y = 2 then

2(x+y) = 12

2( x + 2) = 12

(x +2) = 12/2

x + 2 = 6

x = 6 - 2

x = 4

hope it helps :)

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.