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nexus9112 [7]
4 years ago
12

A zookeeper thinks there is a problem with the naked-mole rat population at the zoo. He starts keeping track of the animals in t

he tunnels. 7 days into his monitoring he counts 120 mole rats. 13 days in he counts 108.
1.) write an equation in point-slope form that represents the situation (define your variables)

2.) convert your equation to slope-intercept form
Mathematics
1 answer:
enyata [817]4 years ago
6 0
Point-slope form is an equation for a straight line that is represented in the formula.............
(y - y1) = m(x - x1) -- this means y (which will stay the same throughout the equation) minus a known or given y value equals the slope (m), parenthesis x (which will also stay the same throughout the equation) minus a known or given x value.

1.) An equation in point-slope for this would be.... (y - 120) = -2(x - 7) -- 120 being your known y value and 7 being your known x value.

2.) The equation in slope intercept form
(which is y=mx+b) would be y = -2x+134.
(y - 120) = -2(x - 7)
(y - 120) = -2*x + (-2*-7)
y - 120 = -2x + 14
+120 +120

y = -2x + 134




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morpeh [17]

We have been given a system of inequalities and an objective function.

The inequalities are given as:

y\leq 2x\\&#10;x+y\leq 45\\&#10;x\leq 30\\

And the objective function is given as:

P=25x+20y

In order to find the minimum value of the objective function at the given feasible region, we need to first graph the region.

The graph of the region is shown below:

From the graph, we can see that corner points of the feasible region are:

(x,y) = (15,30),(30,15) and (30,60).

Now we will evaluate the value of the objective function at each of these corner points and then we will compare which of those values is minimum.

\text{At (15,30)}\Leftrightarrow P=25\cdot 15+20\cdot 30=975\\&#10;\text{At (30,15)}\Leftrightarrow P=25\cdot 30+20\cdot 15=1050\\&#10;\text{At (30,60)}\Leftrightarrow P=25\cdot 30+20\cdot 60=1950\\

Hence the minimum value of objective function is 975 and it occurs at x = 15 and y = 30

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4 years ago
Read 2 more answers
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