20S pre-cal

Monday, February 27, 2006

Scribe Post

Today in class we looked at graphing straight line equations using the "slope-intercept" format.
To do this we must first change the equation into the format y = mx + b, where m( is the slope) and b ( is the y-intercept )
Once in this form the first point we place on the graph is the y-intercept. ( the b value)
Then remembering that slope is the rise/run, we start at the y-intercept and move up or down, then left or right using the slope value to locate the second point.
With 2 points from the line we can draw the line, ensuring that we place arrows at either end of the line.
Just like that the line is graphed.
Assignment was Exercise 12, questions 1 - 9, 11 - 15.
Also a graphing handout which is to be handed in at the beginning of Tuesday's class.


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