Math 10 – week 15 – graphing

This week in math 10, we learned how to tell what a graph will look like by looking at a linear equation. The equation is: y=mx+b

m = slope

b = y intercept

lets take a look at this picture and find the equation.

Remember the equation for slope is y/x or rise/run. So, after finding to nice points, the slope is 7/1, witch can be simplified to just 7. The y-intercept for this line -8, so the equation for this line is: Y=7x – 8.

Know, lets to the opposite, take an equation and make a graph from it: Y=1/3x + 4.

My recommendation would be to start form the y-intercept and then add the slope

Y=1/4x + 2

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