The correct statement about the graph is for each hour she works, her earnings go up by $20.
What is the slope of the curve?
The slope of a curve at a point is equal to the slope of the tangent line at that point.
This graph shows the amount of money Tanya earns from tutoring compared with the number of hours she works.
The slope of the graph for point (0,0 ) and (1, 20) is;
[tex]\rm Slope =\dfrac{y_2-y_1}{x_2-x_1}\\\\ Slope=\dfrac{20-0}{1-0}\\\\Slope=\dfrac{20}{1}\\\\Slope=20[/tex]
Hence, the correct statement about the graph is for each hour she works, her earnings go up by $20.
Learn more about slope here;
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