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Ulleksa [173]
3 years ago
11

The diagram above, not drawn to scale,shows a triangle, ABC, with area 28units². Show workings.

Mathematics
1 answer:
Valentin [98]3 years ago
4 0

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
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<em>Proof below</em>

Step-by-step explanation:

<u>Right Triangles</u>

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