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PilotLPTM [1.2K]
3 years ago
8

Given the function h(x)=-x^2+4x+12, determine the average rate of change of the function over the interval −2≤x≤4.

Mathematics
1 answer:
iris [78.8K]3 years ago
5 0

Answer:

2

Step-by-step explanation:

The average rate of change of h(x) in the closed interval [ a, b ] is

\frac{f(b) - f(a)}{b-a}

Here [ a, b ] = [ - 2, 4 ] , then

f(b) = f(4) = - (4)² + 4(4) + 12 = - 16 + 16 + 12 = 12

f(a) = f(- 2) = - (- 2)² + 4(- 2) + 12 = - 4 - 8 + 12 = 0

Then

average rate of change = \frac{12-0}{4-(-2)} = \frac{12}{6} = 2

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
What is the slope of a line that passes through the points (9,-6) and (-8,7)?
lianna [129]
<h2>Answer:    slope = - ¹³/₁₇  </h2>

Step-by-step explanation:    

       The question gives us two points, (9,-6) and (-8,7), from which we can find the slope and later the equation of the line.

<u>Finding the Slope  </u>

The slope of the line (m) = (y₂ - y₁) ÷ (x₂ - x₁)    

                                         =  (7 - (- 6)) ÷ (-8 - 9)  

                                         =   - ¹³/₁₇  

<em><u>Checking my answer:</u></em>

Finding the Equation

<em>We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:</em>

<em>                                  ⇒  </em><em>y - (-6) =  - ¹³/₁₇ (x - 9)</em>

<em>                                          </em>

       

<em>To test my answer, I have included a Desmos Graph that I graphed using the information provided in the question and my answer.</em>

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Step-by-step explanation:

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