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A graph has two axes, the one running top to bottom (vertical or y axis) and one running right to left (horizontal or x axis). You can run your finger up the y axis to the point where it is at the same height as the point on the line you are interested in, and note the number on the y axis, then run your finger across to the point on the line you are interested in, then take your finger down to the x axis and note the number of that axis, then combine the two.

For example, if the graph shows height on the y axis and time on the x axis, you go up the y axis to say, 23 cm, then across to the point on the line, then down to the x axis which is say, 12 hours, then you know that by 12 hours the plant (for example) had grown 23 cm.

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Q: How to read a graph?

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Title

If the bubble is up its a good thing... down baaad

title, key etc.

Each point on a line graph in 2-dimensional space can correspond to an ordered pair of values for two variables which is observed. Or, if it is a fitted line graph, it is an estimated ordered pair.

Related questions

A line graph is good cause it is easier to read

It is easier to read because it can be not as cluttered as a bar graph or scatter plot graph.

Yes

look and see

No titles or axis' No numbers Or making the graph difficult to read

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The answer depends on what the graph is meant to show. The first step would be to read the axis labels.

Because when you graph a molar concentration vs. absorbance graph, the graph is linear, making the graph easier to read.

It Is Easier To Read

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Distance you read off directly from the graph. Speed is the rate of increase of distance, so it is the slope (gradient) of the graph.