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# Graphing proportional relationships: unit rate

Sal graphs the equation of a line that represents a proportional relationship given a unit rate. Created by Sal Khan.

## Want to join the conversation?

• 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.
• Math makes me cry
• U real for that
• 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?
• Do you like cheese?
• None of these videos make any sense. 0/10 from me.
• Its not that they're bad at explaining, it's just that you don't get it yet.

Also you should comment that in the Tips & Thanks.
• what is the difference between slope change and unit rate?