Erfana Beevee Binte Hassan Shariff's answer to salted egg's Secondary 3 E Maths Singapore question.
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Area of triangle = 1/2 x AB x perpendicular height
= 1/2 x (3-1) x (5-1)
= 1/2 x 2 x 4
= 4 square units
Gradient of line passing thru B and C is the gradient of line BC. Apply gradient formula using coordinates of B and C:
B =(1, 3) and C= (5, 5)
Gradient= (5 - 3)/(5 - 1) = 2/4= 1/2
= 1/2 x (3-1) x (5-1)
= 1/2 x 2 x 4
= 4 square units
Gradient of line passing thru B and C is the gradient of line BC. Apply gradient formula using coordinates of B and C:
B =(1, 3) and C= (5, 5)
Gradient= (5 - 3)/(5 - 1) = 2/4= 1/2
Date Posted:
1 month ago
thank you!
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