The function is not a linear function because the slopes of the different points are not equal,
How to determine the function type?
The points are given as: (-1, -5), (2, 4), (4, 8)
Calculate the slope using:
[tex]m = \frac{y_2 -y_1}{x_2 -x_1}[/tex]
So, we have:
[tex]m = \frac{8 -4}{4 -2} = 2[/tex]
[tex]m = \frac{8 + 5}{4 + 1} = 2.6[/tex]
Notice that the slopes of the different points are not equal,
Hence, the function is not a linear function
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