Q15 · 2022 · Technology-activeSimple familiar5 marks
QUESTION 15 (5 marks)
Consider points A and B .
a)[1 mark]
Determine .
b)[2 marks]
Determine the Cartesian equation of the line that passes through points A and B.
c)[2 marks]
Point A lies on the plane, , and is perpendicular to this plane. Determine the Cartesian equation of the plane.
WORKED SOLUTION
5 marksQCAA guide · typeset solution
ANSWER
; line ; plane .
Worked solution
a) .
b) A Cartesian equation of the line is
c) Since is normal to the plane and A lies on it,
so
correctly determines
correctly substitutes the coordinates of A into the numerator of the line equation
substitutes the direction vector of the line into the denominator
substitutes values into a suitable mathematical rule that represents an equation of the plane
determines a Cartesian equation of the plane
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