Question

iv. making a line graph
line graphs show data plotted as points that are connected by a line. line graphs are often used to show change over time and can be used to compare two or more sets of data.
before a line graph can be constructed, you must identify the two variables that will serve as x and y coordinates on the graph. these are called the
the independent variable is the one being during the experiment. it is always placed on the
the dependent variable is the observed result of the independent variable being changed. the dependent variable is always placed on the
an easy way to remember this is to ask yourself the questions, “what did i know before i did the experiment?” (dependent variable) and “what did i learn by doing the experiment?” (independent variable)
using the grid below, make a line graph using the information in example 1 from above.
be sure to: (1) determine which variable to place on the horizontal (x) axis and which variable to place on the vertical (y) axis. (2) label each axis appropriately. (3) scale each axis appropriately. (4) title your graph.

Explanation:

Line graphs use x - and y - coordinates. The independent variable, which is manipulated, goes on the x - axis (horizontal). The dependent variable, which is the result of the change in the independent variable, goes on the y - axis (vertical). Axes should be labeled with what the variables represent, scaled according to the data range, and the graph should have a title that describes the overall data being shown. Since no data from example 1 is provided, we can't actually draw the graph but can describe the process.

Answer:

1. Independent variable on horizontal (x) axis; dependent variable on vertical (y) axis.
2. Label x - axis with name of independent variable and y - axis with name of dependent variable.
3. Determine appropriate scale for each axis based on the range of values of the variables.
4. Give the graph a descriptive title such as "Relationship between [Independent Variable Name] and [Dependent Variable Name]".