Answer:
Yes, the graph is a function.
Vertical line test proves so.
The answer for 12 is x>3
The answer for 14 is z<-3
Answer:
O y > 4
Step-by-step explanation:
The dotted line indicates the line is not part of the inequality, and it is clearly greater than 4.
Answer:
Step-by-step explanation:
This is the distance formula for cartesian coordinate systems, or your typical xy graph. If given two points to find the distance between, you can assign '1' or '2' to the points, i.e. (1,1) and (2,2) could be: (1,1) is (x1,y1) and (2,2) is (x2,y2). It doesn't matter which point is 1 or 2. If we were to use those example points in this formula, we would have:
We can simplify and come up with:
=
We must remember that square roots can be positive OR negative, HOWEVER, because you are looking for a distance it must be positive .
Hope this helped!