Describe how we know if an equation is a function.
Question 6
6.
Question 7
7.
Graph the function:
Click a Graph tab (Graph 1, Graph 2, and so on) for each graph you need to plot.
Click on the graph background to add a point. Add two points to create a graph. Drag a point or type in x and y coordinates to edit its position. Click on a point to delete it.
After creating your graph, you can check the dashed line box.
Question 8
8.
Solve the following equation for all values of x:
Question 9
9.
Does the equation y = x+2 define a function?
We cannot tell by the function
No, the x yields more than one y.
Yes, there is one output per input.
Is the following equation a function?
Cannot decide without a plot.
Yes, because it's symmetric.
Yes, one output per x.
No, it fails the vertical line test.
Do the following points represent a function?
(1,4), (2,5), (2,6), (3,7)
Not enough info provided.
No, x=2 has two different y values.
Yes, all pairs are valid.
Yes, inputs are not repeated.
Determine if the graphs represent a function
Function
Not a Function
Which of the following equations does NOT represent a function?