How do you create a table and graph the equation #y=2x-1#?

Question

Julia Adams · Accepted Answer

You can create a table by substituting any value for #x# and then solving for #y#. I'll be taking 3 values:

Let #x=0#
Then,
#y=2(0)-1#
#y=-1#
Let #x=1#
Then,
#y=2(1)-1=2-1#
#y=1#
Let #x=2#
Then,
#y=2(2)-1=4-1#
#y=3#

We can then make a table for #x# and corresponding #y# values as follows:

#x****(0)****(1)****(2)#
#y****(-1)****(1)****(3)#

So, you'll get three points on the graph with x-coordinates and y-coordinates that can be taken from the table as #(0,-1), (1,1) and (2,3)#

Plot the points, and pass a straight line through them. The graph will look something like this:

Ethan Adkins · Answer

undefined To create a table for the equation $y = 2x - 1$, choose values for $x$, plug them into the equation, and calculate the corresponding $y$ values. Then, graph the points on a coordinate plane and connect them to form a line. You can choose any values for $x$ depending on the range you want to graph.

| $x$ | $y$ |
|------|------|
| -2   | -5   |
| -1   | -3   |
| 0    | -1   |
| 1    |  1   |
| 2    |  3   |

Then, plot the points (-2, -5), (-1, -3), (0, -1), (1, 1), and (2, 3) on a coordinate plane and draw a line through them to graph the equation $y = 2x - 1$.

(x)	(y)
-2	-5
-1	-3
0	-1
1	1
2	3