GeoGebra Classroom

# Graph Lines Using Tables

## Ex #1

Functions can be written as two-variable equations. Two-variable equations have INFINITE solutions. We can make a partial list of these solutions in a table. We can then use the table to draw a graph of all of the solutions. Graph by completing the following table. x | y 4 | 6 | | 1 | 0 Plot all four points on the provided graph and connect your points with a line. Watch this video to see how it's done- 1.6 Graph Lines Using Tables Video

Which of the following points is also on the line ?

Select all that apply
• A
• B
• C

## Ex #2

Graph 2x + 5y = 15 by completing the following table. x | y 0 | 2 | | 2 | 0 Plot all four points on the provided graph and connect your points with a line.

Which of the following points is also on the line 2x + 5y = 15 ?

Select all that apply
• A
• B
• C

## Problem #1

Graph y = -2x + 1 by completing the following table. x | y -4 | -2 | | -3 | -7 Plot all four points on the provided graph and connect your points with a line. Hints: *to complete the 1st row, plug -4 in for x and solve for y ---> y = -2(-4) + 1 *to complete the 2nd row, plug -2 in for x and solve for y ---> y = -2(-2) + 1 *to complete the 3rd row, plug -3 in for y and solve for x ---> -3 = -2x + 1 *to complete the 4th row, plug -7 in for y and solve for x ---> -7 = -2x + 1

Which of the following points is also on the line y = -2x + 1 ?

Select all that apply
• A
• B
• C

## Problem #2

Graph 5x - 4y = 20 by completing the following table. x | y 1 | 4 | | 2 | 5 Plot all four points on the provided graph and connect your points with a line. Hint: *to complete the 1st row, plug 1 in for x and solve for y ---> 5(1) - 4y = 20 5 - 4y = 20 continue for each row

Which of the following points is also on the line 5x - 4y = 20 ?

Select all that apply
• A
• B
• C