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Ax + By = C By = -Ax + C y = (-A/B)x + C/B
The equation contains variables which are only raised to the first power.
Only one. x = (c - b) / a
The equation ax2 + bx + c = 0, where a != 0 is called quadratic.
[ Ax + By = C ] If 'A', 'B', and 'C' are numbers, then the graph is always a straight line, and the equation is a "linear" one.