Coordinate geometry in two dimensions

• Condition for two lines to be parallel or perpendicular

• Midpoint of line segment

• Area of rectilinear figure

• Coordinate geometry of circles in the form:

– (x − a)2 + (y − b)2 = r 2

– x2 + y2 + 2gx + 2fy + c = 0

(excluding problems involving two circles)

• Transformation of given relationships, including y = ax^n and y = kb^x , to linear form to determine the unknown constants from a straight line graph

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