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Tpy6a [65]
3 years ago
11

How to make a graph of an exponential function that shows exponential decay and has a y intercept of 2

Mathematics
1 answer:
Sliva [168]3 years ago
6 0

Answer:

f(x)=2e^{-kx}

in a graph the x value at the y intercept is 0

f(x)=Ae^{-kx}  is a typical decay function

if x = 0  thus e^{-kx} = 1

so at 0 the function value would be A

f(x)=2e^{-kx}

Step-by-step explanation:

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Can you please help me with this i don’t understand
Alinara [238K]

Answer:

  (5, 2)

Step-by-step explanation:

<h3>understanding the question</h3>

The question is asking you to express the temperature at 5 pm as a pair of graph coordinates.

Doing this requires that you ...

  • read from the graph the temperature at 2 pm
  • read from the graph the temperature at 8 pm
  • figure the temperature halfway between those values
  • express the 5 pm temperature as an ordered pair (hours, °C)

__

<h3>reading the graph</h3>

The description of the graph tells you the horizontal scale is hours after noon, so the temperature at 2 pm will be a point on the graph with an x-coordinate of 2. That point is (2, 7), indicating the temperature at 2 pm is 7 °C.

Likewise, the temperature at 8 pm is shown as the point on the graph with x-coordinate 8. That point is (8, -3), indicating a temperature of -3°C at 8 pm.

<h3>halfway temperature</h3>

The temperature halfway between those values (7 °C and -3 °C) can be found several ways. Perhaps the easiest is to average the values:

  (7 +(-3))/2 = 4/2 = 2

The temperature at 5 pm is 2 °C.

<h3>coordinates</h3>

Coordinates on the graph are ordered pairs of the form (x, y) = (hours, °C). The time 5 pm is 5 hours after noon, so the x-coordinate is 5. The temperature at 5 pm is halfway between the temperatures at 2 and 8 pm, which we have computed to be 2 °C, so the y-coordinate is 2.

The coordinates that represent the temperature at 5 pm are ...

  (5, 2)

6 0
1 year ago
Need help ASAP please
ElenaW [278]

Answer:

(6,3) and (-5,3)

Step-by-step explanation:

3 is the y coordinate, so we just move the points over 6 units either way.

4 0
3 years ago
Write an equation of the line that passes through (-2,5) and (2,-1)
klemol [59]
I think it would be y=-1(x)+1
6 0
3 years ago
Read 2 more answers
Write the stores in the correct order from least to greatest cost per pound of pears. (with an explanation please)
dolphi86 [110]

Answer:

Store A has the greatest cost per pound of pears as each pound of pears cost $1.29

Step-by-step explanation:

Store A

(3, 3.87)

(5, 6.45)

5-3=2

6.45-3.87=2.58

2.58 /2= $1.29

Store B

(2,2)

(4,4)

4-2=2

4-2=2

2/2=1

Store C

1.78/2= $0.89

Answer is Store A

7 0
3 years ago
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Hey can anyone help me with this ? Thank you so much
stellarik [79]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
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