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2 years ago

Does this graph represent a function? Why or why not?

Mathematics

2 answers:

Ugo [173]2 years ago

8 0

Answer:

Yes

Step-by-step explanation:

Draw vertical lines parallel to the "y" axis and you will notice that they only cross the graph once. This only happens in function graphs.

Hope this helps

LiRa [457]2 years ago

3 0

Answer:

The graph represents a function

Step-by-step explanation:

As you can observe, there is only one unique output assigned to every input. If an input contained 2 or more outputs, the relationship wouldn't be a function.

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Which represents the solution(s) of the graphed system of equations, y = x2 – 2x and y = –2x – 1? (1, –1) (0, 0) and (0, –1) (0,

olganol [36]

ANSWER

No solution

EXPLANATION

The first equation is

$y = {x}^{2} - 2x$

and the second equation is

$y = - 2x - 1$

We equate the two equations to obtain;

${x}^{2} - 2x = - 2x - 1$

This implies that

${x}^{2} = - 2x + 2x - 1$

${x}^{2} = - 1$

There is no real number whose square is -1.

Therefore, the equation has no solution.

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3 years ago

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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Portland. The stu

iVinArrow [24]

Answer:

$-0.061 < P_1 -P_2< 0.025$

Step-by-step explanation:

Give data:

$n_1 = 350$

$n_2 =250$

$x_1 = 23$

$x_2 = 21$

$\hat{P} 1 = \frac{x_1}{n_1} = \frac{23}{350} = 0.066$

$\hat{P} 2 = \frac{x_2}{n_2} = \frac{21}{250} = 0.084$

for 95% confidence interval

$\alpha = 1 - 0.95 = 0.05 and \alpha/2 = 0.025$

$z_{\alpha/2} = 1.96$ from standard z- table

confidence interval for P_1 and P_2 is

$\hat{P} 1 - \hat{P} 2 \pm z_{\alpja/2} \sqrt{\frac{\hat{P} 1(1-\hat{P} 1)}{n_1} +\frac{\hat{P} 2(1-\hat{P} 2)}{n_2}}$

$(0.066 - 0.084) \pm 1.96 \sqrt{\frac{0.066(1-0.066)}{350} +\frac{0.084(1-0.084)}{250}}$

$-0.018 \pm 0.043$

confidence interval is

$-0.018 - 0.043 < P_1 -P_2$

$-0.061 < P_1 -P_2< 0.025$

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3 years ago

The measures of exterior angles of a regular polygon with n numbers of sides ______ as n increases.

photoshop1234 [79]

The answer to this i increases.

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3 years ago

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*Brainliest*<br> I need help with 4 problems like this...KHAN ACADEMY.

Sedaia [141]

9514 1404 393

Answer:

(x +1)² = 4
(D) x = -1 ±2

Step-by-step explanation:

Start by getting the x-terms on one side of the equal sign. We can do that by subtracting x from both sides.

3 = x² +2x

Now, add the square of half the x-coefficient.

3 +1 = x² +2x +1

(x +1)² = 4 . . . . . . . . write as a square in the desired form

To solve, take the square root, and add the opposite of the left-side constant.

x +1 = ±2

x = -1 ±2 . . . . . . matches choice (D)

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3 years ago

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3 years ago

Does this graph represent a function? Why or why not?​

Does this graph represent a function? Why or why not?