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4 years ago

Which point is an x-intercept of the quadratic function f(x) = (x – 4)(x + 2)?

2 answers:

7 0

The quadratic equation is in factored form, which is f(x) = (x - a)(x - b), where a and b are the x-values for the x-intercepts.

The x-values for the x-intercepts are 4 and -2. We know that the y-value at any x-intercept must be 0 (otherwise it isn't an x-intercept).

Thus, either the points (4,0) or (-2,0) must be your answer (the question is only asking for one x-intercept).

mr Goodwill [35]4 years ago

6 0

Answer:

(-2,0)

Step-by-step explanation:

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Answer:757

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3 years ago

Ben is an elementary school student whose height is 4 feet tall. He grows 1.5 inches every year. Johnny is also an elementary sc

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3 years ago

Sam runs for 10 minutes The graph shows his puse, in beats per minute. 100- (beats per min) 80- 1 2 3 5 6 7 8 9 10 Time (min) By

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The rate at which his pulse is increasing after 3 minutes is 9.5 beats per minute

<h3>How to determine the beat rate after 3 minutes?</h3>

The given graph shows the curve and the tangent.

From tangent line, we have the following points:

(x,y) = (3,119) and (1,100)

The beat rate (m) at this point is:

$m = \frac{y_2 -y_1}{x_2 -x_1}$

So, we have:

$m = \frac{100 - 119}{1 - 3}$

Evaluate the differences

$m = \frac{-19}{-2}$

Evaluate the quotient

m = 9.5

Hence, the rate at which Sam's pulse is increasing after 3 minutes is 9.5 beats per minute

Read more about rates of tangent lines at:

brainly.com/question/6617153

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3 years ago

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Answer:

Step-by-step explanation:

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4 years ago

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Answer:

Multiple answers (Work & answers below)

Step-by-step explanation:

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3 years ago