Q.(y − y1) = m(x − x1) gives the :

The correct option is (d) Straight line: (y − y1) = m(x − x1) is the point-slope equation of a straight line.

Any first-degree relation between two variables plots as a straight line. The form (y − y1) = m(x − x1) is the point-slope form: it describes the unique straight line that passes through the point (x1, y1) and has slope m. Here m measures the steepness (rise ÷ run) of the line.

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