# Write a multivariable function (i.e z=f(x,y)) for a linear function that contains the points (−1,0),

Write a multivariable function (i.e z=f(x,y)) for a linear function that contains the points (−1,0),(0,2),(1,−1). Ive
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chukizosv
The general form of a linear function of two variables is given by
$f\left(x,y\right)=Ax+By+C$
Plugging in the points you were given should give you three equations in the three unknowns $\left(A,B,C\right)$, which you can then solve.