Question

If one of the lines given by \( 6x^2 - xy + 4cy^2 = 0 \) is \( 3x + 4y = 0 \), then \( c \) equals

• A. \( -3 \)
• B. \( 1 \)
• C. \( 3 \)
• D. \( -1 \)

Hint:

To solve problems like this, substitute the line equation into the given pair of straight lines equation and simplify the resulting expression.