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Coolmath Algebra
Lines Lesson 7 - Equations of Lines (Graphing Method 2 - Slope Intercept Form) (page 2 of 2)
---- This algebra lesson gives an overview of equations of lines and shows how to graph a line using the slope-intercept (y-intercept) form of a line.

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Check it out:

Graph y = ( -3 / 5 )x + 4

1)   It crosses the y-axis at 4, so we start there:  

a graph of the point ( 0 , 4 )

2)   the slope is   -3 / 5   so we

drop down 3 on the graph from the point ( 0 , 4 )

...and run over five on the graph to the point ( 5 , 1 ) ... done!

Let's do another one:

Graph y = 4x - 2

 

1)   It crosses the y-axis at
  y = -2, so we start there:

a graph of the point ( 0 , -2 )

 

2)   The slope is 4 which is really   4 / 1...

rise up 4 on the graph from the point ( 0 , -2 )

...and run over 1 to the point ( 1 , 2 )

YOUR TURN:

Graph y = ( 1 / 2 )x - 3

 The printing and distribution and/or downloading of these lessons is strictly prohibited.

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