Graphing linear equations

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Graphing linear equations

• By
• Robert O. Mills Jr.
• Hermitage High School
• Henrico County Public Schools

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Part Two

• Creating a table

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After you have solved the equation for y you need
to create a table for the possible solutions for
the equation.
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Given the Solution
yx4
5
Create a t-table with the domain (x values) as
-1,0,1.
x
y
-1 0 1
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Substitute your domain in place of x and solve
the equation.
x
yx4
y
(x,y) op
3 4 5
-1 0 1
y (-1) 4 y04 y14
(-1,3) (0,4) (1,5)
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New solution y4-x
y
x
y4-x
(x,y)
y4-(-1) y4-0 y4-1
(-1,5) (0,4) (1,3)
-1 0 1
5 4 3
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yx-4
yx-4
x
y
op
-1 0 1
-5 -4 -3
(-1,-5) (0,-4) (1,-3)
y(-1)-4 y0-4 y1-4
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op
y
x
-1 0 1
2.5 2 1.5
(-1,2.5) (0,2) (1,1.5)
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x
op
y
-1 0 1
-3 -2 -1
(-1,-3) (0,-2) (1,-1)
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Sometimes you can simplify the chart to a table.
yx-2
y
x
-1 0 1
-3 -2 -1