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Course: Equations & Inequalities 229-236>Unit 2

Lesson 1: Graphing proportional relationships

Graphing proportional relationships: unit rate

In proportional relationships, the unit rate is the slope of the line. Changes in x lead to steady changes in y when there's a proportional relationship. We can use the unit rate to write and graph an equation of the line that represents the relationship. Created by Sal Khan.

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• Why am I still doing this I have no life...
• really why would you say that don't know what the future holds
• At , why is constant represented with a k? And if c represents something else, what is that term?
• c stands for the speed of light, a very specific number.
• How do you find the rate of change
• When the value of x increases, the value of y remains constant. That is, there is no change in y value and the graph is a horizontal line.
• Why is math HARD,I practice and watch the videos more than once and I dont know to be getting better
what do I do?
• Here are some questions to ask yourself, to identify the difficulty.

1) What kinds of errors, if any, am l making that cause me to answer the problems incorrectly?

2) ls there a lower level skill l’m missing that is needed to solve these problems?

3) Do l tend to learn math only by rote, instead of aiming for a deeper level of understanding?
• what is the difference between slope change and unit rate?
• Slope change is the same as unit rate, but unit rate also has to be some number over 1.
• yes every one gets confused
• i dont know how to do this
• Why did Sal put the first dot on (0,0)?