An equation can be used to define any non-vertical line in the Cartesian Coordinate system. The correct option is C.
A nonvertical line is a line that has a slope and is defined by its steepness.
It can be represented by a straight line equation y = mx+c, here m is the slope and c is the y-intercept.
The slope can be determined by using two points on the line (x₁,y₁) and (x₂,y₂)
m = (y₂-y₁)/(x₂-x₁)
From the options given, An equation can be used to define any non-vertical line in the Cartesian Coordinate system.
The correct option is C.
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