The graph of
\(r = -\frac{5}{2 \cos \theta + \sin \theta}\)
is a line. Find the y-intercept of this line.
r = √ [ x^2 + r^2]
cos θ = x / r = x / √ [ x^2 + r^2]
sin θ = y / r = y / √ [ x^2 + r^2]
So we have
√ [ x^2 + r^2] = -5
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( 2x + y ) / √ [ x^2 + r^2]
√ [ x^2 + r^2] = -5 √ [ x^2 + r^2]
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2x + y
1 = - 5
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2x + y
2x + y = - 5
y = -2x + -5
The y intercept is -5
CORRECTED !!!!