Solve for k
k=-\frac{\sqrt{7}}{4}\approx -0.661437828
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-4k=\sqrt{7}
Multiply both sides of the equation by 2.
\frac{-4k}{-4}=\frac{\sqrt{7}}{-4}
Divide both sides by -4.
k=\frac{\sqrt{7}}{-4}
Dividing by -4 undoes the multiplication by -4.
k=-\frac{\sqrt{7}}{4}
Divide \sqrt{7} by -4.
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