For each graph below, state whether it represents a function.
HELP! idk what the dots mean and how to figure it out!

See below.

Step-by-step explanation:

The way to check if a graph is a function is by the vertical line test.

If, anywhere on the graph, a vertical line passes through the graph at more than one point then it is NOT a function.

So we see that the graph on the top left is not a function because we can draw a vertical line through the diamond shaped graph which pass through the graph at 2 points.

The same applies to graph 2:- its not a function for the same reason.

However Graph 6 is a function because any vertical line drawn will only pass through the graph at one point.

Graph 3 is a function  for the same reason.

Graph  4 is not a function because a vertical line passes through the 2 dots on the right.

What about Graph 5?

42.4

step-by-step explanation:

convert to decimal

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24