Find the slope of the line. Let it be the letter m.
Slope is the rise over the run.
Find a clear point on the line see how much you would have to go up and then over to be on the line again.
Next find where it crosses the vertical axis called y-axis. Let that be the letter b.
Put it into this form y=mx+b
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The graph is a straight line.
a non linear graph pretty much means the points on the graph do not create a straight line. in order for a graph to be linear both the x axis and y axis have to increase/decrease at a constant rate, while in a non-linear graph when you connect the point it creates a line that isn't straight. however, in experimental data if the points are a bit off, but still in one general area, it can be considered linear.
A straight line graph plotted on the Cartesian plane
It is a straight line.
A straight line.