Is {(-2,6), (-3,7), (-4,8), (-3,10)} a function

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Here we have four points:   {(-2,6), (-3,7), (-4,8), (-3,10)}.  Two of them have the same x-coordinate (-3).  Thus, this is not a function.  Another way to look at this:  If x = -3, then y = 7 or y = 10.  If there is more than one y-value associated with any x-value, then what you have is not a function.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

l.ln.lln.k.nkl

step-by-step explanation: