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The diagram above, not drawn to scale,shows a triangle, ABC, with area 28units². Show workings. a) find the coordinates of C b) Find the equation is the line BC

The diagram above, not drawn to scale,shows a triangle, ABC, with area 28units². Show workings. a) find the coordinates of C b) Find the equation is the line BC
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The diagram above, not drawn to scale,shows a triangle, ABC, with area 28units². Show workings.

a) find the coordinates of C
b) Find the equation is the line BC

The diagram above, not drawn to scale,shows a triangle, ABC, with area 28units². Show-example-1
User Honeybear
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1 Answer

5 votes

A. (0,-6)
plug in the area to the area formula for a triangle (A=1/2bh). so 28=1/2b(4) [since the height is 4]. divide by 4 (7=1/2b). multiply by 2/divide by 1/2 (14=b). the base equals 14 units long.
B. y=2/3x+4
find the slope of the line (2/3)
the y-intercept is 4
User Sergei Kovalenko
by
7.8k points
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