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# CAVA Chem: Graphing

### Graphing Lesson from CAVA Chemistry

QuestionAnswer
Graphs show relationships between [...]. Graphs show relationships between variables.
When you plot the volume of the gas against the temperature, the line of the graph shows the relationship between the two variables, temperature and volume. Temperature is on the [...] and volume is on the [...]. When you plot the volume of the gas against the temperature, the line of the graph shows the relationship between the two variables, temperature and volume. Temperature is on the x-axis and volume is on the y-axis.
When you plot One thing 'against' another, the one thing goes on the [...] and the other thing goes on the [...]... that's the (arbitrary) convention (don't blame me, it's not my fault). When you plot One thing 'against' another, the one thing goes on the y-axis and the other thing goes on the x-axis... that's the (arbitrary) convention (don't blame me, it's not my fault).
If the graph of one variable against another shows a straight line, the two have a [...] relationship. If the graph of one variable against another shows a straight line, the two have a linear relationship.
[...]-axis: the bottom of the graph... measures side-to-side x-axis: the bottom of the graph... measures side-to-side
[...]-axis: the left side of the graph... measures up-and-down y-axis: the left side of the graph... measures up-and-down
The independent variable is (by convention) placed on the [...]-axis The independent variable is (by convention) placed on the x-axis
The dependant variable is (by convention) placed on the [...]-axis The dependant variable is (by convention) placed on the y-axis
A [...] line shows the relationship between the independent and dependent variables. A trend line shows the relationship between the independent and dependent variables.
When you draw a trend line, you don't try to connect the dots. You draw a line that shows the [...] of your data points. When you draw a trend line, you don't try to connect the dots. You draw a line that shows the general trend of your data points.
The slope of a line is the [...] divided by the [...] between two points on the line. The slope of a line is the change in y values divided by the change in x values between two points on the line.
If the graph of one variable plotted against another is not a straight line, they have a [...] relationship. If the graph of one variable plotted against another is non a straight line, they have a non-linear relationship.
If one variable increases as the other one also increases, they have a [...] relationship. If one variable increases as the other one also increases, they have a direct relationship.
If one variable decreases as the other one increases, they have an [...] relationship. If one variable decreases as the other one increases, they have an indirect relationship.
Created by: mr.shapard