I hope I did this right but y= -146
Local maximum looks like a downward U
So flip that letter U and you'll be looking at a local max.
<span>The graph of f ' should be positive and increasing as x approaches a.</span>
5(d + 1) = 5d + 5
if you want to solve ahead then,
5d + 5 = 0
5d = -5
d = -1
hope this answer your question.
Answer:
Step-by-step explanation:
<u>System Determinant</u>
The determinant of the system is the determinant of the matrix of coefficients:

<u>X Determinant</u>
This is the determinant of the matrix with the x-coefficients replaced by the constants.

<u>Y Determinant</u>
This is the determinant of the matrix with the y-coefficients replaced by the constants.

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This problem didn't ask, but the solution is ...
x = Dx/D = -4/-2 = 2
y = Dy/D = -2/-2 = 1
(x, y) = (2, 1)