ConstructionModerate1 mark
3(iii)
In the given graph ABCD is a parallelogram. Using the graph, answer the following:
find the slope of sides CB and DA and verify that they represent parallel lines.
Topic: Slope / equation of line
Previous-year question practice database
Answer
Exam answer
C(−4,−2), B(0,−2).
mCB = [−2−(−2)]/[0−(−4)] = 0.
D(−1,3), A(3,3).
mDA = (3−3)/(3−(−1)) = 0.
mCB = mDA. Therefore CB ∥ DA.
Answer: Both slopes are 0.
Explanation
Parallel non-vertical lines have equal slopes. Here both sides are horizontal.
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