From the given data, the equation formed as y = -2x + 6 so, the given function is linear.
What is a linear equation?
A linear equation is an equation that has the variable of the highest power of 1. The standard form of a linear equation is of the form Ax + B = 0.
From the given data, the slope of function.
m = (2 - 4) /( 2 - 1)
m = -2 / 1
m = -2
The equation will be
y - 2 = -2 ( x - 2 )
y -2 = -2x + 4
y = -2x + 6
Thus, the given function is a linear.
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