The linear functions are: y + 1 = 5(x - 9), -y + 1 = 5(x − 9), 7y + 2x = 12, -7y + 2x = 12, 4y = 24, and -4y = 24
<h3>How to classify the functions?</h3>
As a general rule, linear functions take any of the following forms:
y = mx + b
Ax + By = C
y - y1 = m(x - x1)
Any equation that take a different form is not a linear function
Using the above as a guide, the linear functions are:
y + 1 = 5(x - 9), -y + 1 = 5(x − 9), 7y + 2x = 12, -7y + 2x = 12, 4y = 24, and -4y = 24
Other functions are nonlinear
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