Answer: 
, 5.6
Or rounded it would be 6.
I hope I did this right. :)
Answer:
Yes
Step-by-step explanation:
This relation is a function. Functions must have unique x-values for every y-value, this relation meets those requirements. Also, since this is a graph you can use the vertical line test. To pass the vertical line test you must be able to draw a vertical line on the graph and have it intersect with the function in no more than one place.
Answer:
Plot the points on the graph and you'll find the coordinates of vertex C.
Step-by-step explanation:
Let x be the number of children
Let y be the number of adults
x + y = 4
4x + 7y = 19
