The function means that the variable "y" (dependent variable) depends on x(inependent variable), in the following way: [tex]y=-x+1[/tex].
When [tex]x=1[/tex], [tex]y=-1+1=0[/tex], when [tex]x=1[/tex], then [tex]y=-1-1=-2[/tex].
The intercept of the function (the value that makes y=0) will be for x=1, and the slope (which is the coefficient that join x, is (-1). Using this information, you can obtain the graph for this function.
