Graphing linear equations By Robert O Mills Jr

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Graphing linear equations By Robert O. Mills Jr. Hermitage High School Henrico County Public

Graphing linear equations By Robert O. Mills Jr. Hermitage High School Henrico County Public Schools

Part Three Graphing

Part Three Graphing

After you have discovered a relation of at least 3 ordered pairs you may

After you have discovered a relation of at least 3 ordered pairs you may now graph the linear equation.

Given the solution : y=x+4

Given the solution : y=x+4

Create a t-table with the domain (x values) as {-1, 0, 1}. y x

Create a t-table with the domain (x values) as {-1, 0, 1}. y x -1 3 0 4 1 5

Place the points on a graph. x y -1 3 0 4 1 5

Place the points on a graph. x y -1 3 0 4 1 5

Add additional points to the graph.

Add additional points to the graph.

Draw a line connecting all the points.

Draw a line connecting all the points.

New solution: y=4 -x Plot table and graph points. x y -1 5 0

New solution: y=4 -x Plot table and graph points. x y -1 5 0 4 1 3

Add additional points to the graph.

Add additional points to the graph.

Draw a line connecting all the points.

Draw a line connecting all the points.

New solution: y=x-4 Plot table and graph points. x y -1 -5 0 -4

New solution: y=x-4 Plot table and graph points. x y -1 -5 0 -4 1 -3

Add additional points to the graph.

Add additional points to the graph.

Draw a line connecting all the points.

Draw a line connecting all the points.

New solution: Plot table and graph points. x y -1 2. 5 0 2

New solution: Plot table and graph points. x y -1 2. 5 0 2 1 1. 5

Add additional points to the graph.

Add additional points to the graph.

Draw a line connecting all the points.

Draw a line connecting all the points.

New solution: Plot table and graph points. x y -1 -3 0 -2 1

New solution: Plot table and graph points. x y -1 -3 0 -2 1 -2

Add additional points to the graph.

Add additional points to the graph.

Draw a line connecting all the points.

Draw a line connecting all the points.

Please note the following: • All linear equations graph to a line. • When

Please note the following: • All linear equations graph to a line. • When +x is in the final solution the line increases in value (goes up). • When -x is in the final solution the line decreases in value (goes down). • The value of y when the value of x=0 is the point where the line crosses the y axis. (y intercept)