Sunday, February 27, 2011

Nicala's Post

In class this we learned chapter five which basically the same stuff that we have been doing on the blue part of the pie on aleks. We also started working on the gold and purple parts on the pie which are really hard so I did some of the modules in the green part to make the 14 that i need.

One of things that i worked on aleks is was the lines with slope and a point on the line.
Example problem

A line passes through the point (-5,-3) and has a slope of 2. Write an equation of the line.

The form that you use in this problem is y=mx+b. You put the numbers in place of yr variables.You use -5 as yr x and -3 as yr y.

-3=-5(2)+b
-3=-10+b
you move the -10 to other side of the equal sign and it becomes +1o and you add +10 to -3
which gives me +7
7=b
now you put the slope,2, and yr b,2, back in the problem to get yr answer.
y=2x+7

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