Line graphs - video lesson
I show how to draw a basic line graph: we need to choose a scaling for the vertical or y-axis, then draw dots for each of the data items, and lastly connect the dots with line segments. The first example has to do with muffin sales and the other with Mathy's and Giganto's math quiz scores.
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See also
Drawing a histogram and a double bar graph
Math Mammoth Grade 5 curriculum