# Scientific Graphs Notes

Scale

Include all the informational points

Make the graph as large as possible

Space out the data points as much as possible

Origin

Decide if the graph starts at 0 or not

Label each axis

Include name of the variable and the unit used

All units must be metric

Best Fit Line

Plot points

Look for relationship (linear, inversely proportional)

Use straight edge to draw best fit line

Equal number of points above and below the best fit line

Slope

Calculate the slope of the line

Slope is rise over run

choose 2 points on the best fit line

Calculate the change in y over the change in x

Always report the slope in decimal form

For right now, only use three or four decimals. However, we will get more instructions on this later