3 years ago

Determine the value of B such that the line defined by 8x + By + 92 = 0 passes through the point (-4,12).

1 answer:

8 0

8x + By + 92 = 0

(-4; 12) ⇒ x = -4; y = 12

subtitute

8 · (-4) + 12B + 92 = 0
-32 + 12B + 92 = 0
12B + 60 = 0 |subtract 60 from both sides
12B = -60 |divide both sides by 12

B = -5

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Keywords: unit rate, division

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