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vfiekz [6]
3 years ago
8

Which linear function passes through (-1,8) and has a slope of -2

Mathematics
1 answer:
vova2212 [387]3 years ago
6 0

Answer:

Step-by-step explanation answer is C

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Let f be a differentiable function such that f(0) = -5 and f'(x) is less than or equal to 3 for all x. Of the following, which i
stepladder [879]
E) 2 
 Remember that the first derivative of a function is the slope of the function at any specified point. We've been told that f(0) = -5 and that f'(x) is always less than or equal to 3. So let's look at the available options and see what the average slope would have to be in order to get the specified value of f(2).
 A) -10: (-10 - -5)/(2 - 0) = -5/2 = -2.5
 B) -5: (-5 - -5)/(2 - 0) = 0/2 = 0
 C) 0: (0 - -5)/(2 - 0) = 5/2 = 2.5
 D) 1: (1 - -5)/(2 - 0) = 6/2 = 3
 E) 2: (2 - -5)/(2 - 0) = 7/2 = 3.5 
 Now taking into consideration the mean value theorem, the value of the function f'(x) has to have the value equal to the average slope between the two points at at least one point between the two given values. For options A, B, C, and D it's possible for f'(x) to return values that make that slope possible. However, for option E, the mean value theorem indicates that f'(x) has to have the value of 3.5 for at least 1 point between x=0 and x=2. And since we've been told that f'(x) is less than or equal to 3 for all possible values of x, that is in conflict and f(2) can not have the value of 2.
3 0
3 years ago
What are the coordinates of the point in the directed line segment from (-2,-8) to (5,-1) that partitions the segment into the r
boyakko [2]

Answer:

The coordinates of the point X:

  • (x, y) = (-1, -7)

Step-by-step explanation:

Let X be the point.

As the point X is in the directed line segment from (-2,-8) to (5,-1) into the ratio of 1 to 6

i.e.

\left(x_1,\:y_1\right)\:=\:\left(-2,-8\right)

\left(x_2,\:y_2\right)=\left(5,-1\right)

Rise = y₂ - y₁

       = -1 - (-8)

       = -1 + 8

       = 7

Run = x₂ - x₁

      = 5 - (-2)

      = 5 + 2

      = 7

1 : 6 ratio means the point X lies at

\frac{1}{6+1}=\frac{1}{7}=14\%

Thus,

rise for X =\:7\:\times \:14\%=1

run for X =\:7\:\times \:14\%=1

Thus, coordinates of X will be:

x = -2 + 1 = -1

y = -8 + 1 = -7

Therefore, we conclude that:

The coordinates of the point X:

  • (x, y) = (-1, -7)
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How to write one million twelve thousand sixty in standard form
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1,012,060 is the anwaser if it helped
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Tam walks 2 miles to shool each day. During gym class she always runs three times as far as far as Dante how many miles will Tan
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Please help solve with step by step answer : 15 divided (-5) - (-10) <br> Thanks
ELEN [110]

Answer:

3

Step-by-step explanation:

First, simplify (-5) - (-10).

-5 + 10 = 5

So, 15 divided by 5 is 3

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