A rhombus $$\(A B C D\)$$ has a diagonal $$\(A C\)$$ where $$\(A\)$$ is the point $$\((-3,10)\)$$ and $$\(C\)$$ is the point $$\((4,-4)\)$$. Find the equation of the line $$\(B D\)$$. .............................................
Exam No：0580_s20_qp_41 Year：2020 Question No：10(a)(iii)
Answer:
\(y=\frac{1}{2} x+\frac{11}{4}\) oе
Knowledge points:
E3.3 Calculate the length and the coordinates of the midpoint of a straight line from the coordinates of its end points.
E3.6 Find the gradient of parallel and perpendicular lines. (e.g. find the gradient of a line perpendicular to y = 3x + 1.) (e.g. find the equation of a line perpendicular to one passing through the coordinates(1, 3) and (–2, –9).)
Solution:
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