9 Three farmhouses are to be powered by wind. The farms are located at A(60,20), B(220, 120) and C(240,40), where the coordinates are in metres. A wind turbine is to be placed at the point equidistant from the farms A, B and C. Find: al the equation of the line (AB) li the midpoint of line segment [AB] i the equation of the perpendicular bisector of line segment [AB] bl the equation of the line (AC) il the midpoint of line segment [AC] ii the equation of the perpendicular bisector of line segment [AC] Ci the equation of the line (BC) ii the midpoint of line segment [BC] ii the equation of the perpendicular bisector of line segment [BC].

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.