Question

Graph each linear equation. Is the equation a function?
y=- x - 2

Answer 1

One way of graphing is by determining the type of graph you will get and finding enough points to give a good idea of the shape of the graph.

y = -x - 2 has y to the first power and x to the first power. In other words, there are no variables squared or cubed, etc., or variables multiplied by each other. That means the graph is a straight line.

Answer 2

Do you understand this so far?

Answer 3

so its a function

Answer 4

Every line is a function except for a vertical line. This is a line but not a vertical line, so it is a function.

Answer 5

Now we need to graph it.
Since we know it's a line, all we need is two points.

Answer 6

so my answer is yes its a function

Answer 7

Make a table like I show below.
Choose two values for x.
Find the corresponding y values.
Then use those two points to graph the line.

I chose 0 and 2 for x. You can choose any two values you want.
Now calculate the y value for each x value and fill in the table.