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# HELP ASAP ILKNEKJDBLCXENFor what negative value of k is there exactly one solution to the system of equations ​

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For what negative value of k is there exactly one solution to the system of equations \begin{align*} y &= 2x^2 + kx + 6 \\ y &= -x + 4? \end{align*}

Oct 4, 2019

#1
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Substitute and simplify

2x+ (k+1)x + 2

There is exactly one solution when the discriminate is equal to 0.

That is my hint and I will let you solve.

Oct 4, 2019
#2
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ok thx

Guest Oct 4, 2019