Math, asked by pallu45, 1 year ago

if a straight line ax+ by+cz=0 always passes through (1,-2)then a,b,c are in ? ​

Answers

Answered by Anonymous
1

Answer:

If a,b,c are in A.P then

a + c = 2 b

=> a − 2 b + c = 0

=> ax + by + c = 0

it passes through (1, − 2)


pallu45: thq
pallu45: and can you xplain A.p,h.p.G.p
Answered by brunoconti
1

Answer:

Step-by-step explanation:

If ax + by + c = 0 always passes through (1 , - 2) then a - 2b + c = 0, then b - a = c - b which means that a, b and c are in arithmetic progression.

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