Plotting Straight Lines Using A Table Of Values

This lesson covers:

  1. How to complete a table of 𝑥 and 𝑦 values for an equation
  2. How to use a table of values to plot a straight line on a graph
Table of values for the line y equals 2x plus 2 with a missing value.

The diagram above shows the table of values for the line 𝑦 = 2𝑥 + 2.


What is the missing value?

6

0

/

1

Table of values for plotting straight lines with equation y equals 11x minus 3.

When 𝑥 = 0, 𝑦 = .

-3

0

/

1

Table of values for plotting the straight line y equals 1x minus 3 with x values of -2, -1, 0, 1, and 2.

When 𝑥 = -2, 𝑦 = .

-25

0

/

1

Table of values for the equation y equals 2x minus 3 showing x values from negative 2 to 2 and corresponding y values.

When x = -1, y = .

-5

[0/1]

Graph showing three straight lines labeled A, B, and C on a coordinate plane.

If you plotted the table of values above, which of the lines (shown on the graph below) would you get?

C

B

A

[0/1]

0

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2

Table showing values of x and y for the equation y = -2x + 2 with missing values.

Fill in the missing values from the table above:


When 𝑥 = -2, 𝑦 = .

When 𝑥 = 0, 𝑦 = .

When 𝑥 = 2, 𝑦 = .

6
2
-2

[0/3]

Using these values, which of the lines on the graph below is the line:

𝑦 = -2𝑥 + 2

Graph showing three straight lines labeled A, B, and C with coordinates and values for x and y axes.

C

A

B

[0/1]

0

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4