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3 years ago

11

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

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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