+1 vote
in Class 11 by kratos

Prove that the equation 12x2 + 7xy - 10y2 + 13x + 45y - 35 = 0 represents two straight lines, and find the angle between them.

1 Answer

+2 votes
by kratos
 
Best answer

The equation therefore represents two straight lines. Solving it for x, we have

The given equation therefore represents the two. straight lines

3x = 2y - 7 and 4x = - 5y + 5.

The "m'*" of these two lines are therefore 3/2 and - 4/5 , and the angle between them,

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