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MAT_1143_feb_9

# MAT_1143_feb_9 - February 9 2011 Click to edit Master...

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Click to edit Master subtitle style February 9, 2011 Sections 2.5 and 2.6

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What if Rate of Change is Constant? If the average rate of change is ALWAYS the same We drop the average Say rate of change Have a line of that slope Obj105
Start with Info Might have a phone plan Pay \$20 a month \$.10 per minute for each call What is the cost if we call for 20 minutes? A: \$22 B: \$40 C: \$18 D: \$21

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Start with Info Might have a phone plan Pay \$20 a month \$.10 per minute for each call How would we write an equation for this? Cost = 20 + .10*Minute From verbal description (and information there) can come up with equation
In General y = b + mx Output = initial value + slope * Input Initial value is the y-intercept (0, init value) This form is useful as it is most like the forms that will come later More often written is as y = mx+b Called slope-intercept form of the equation From the form of the equation, we can quickly read off some information

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