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3 years ago

Which of the following relations is a function?

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

6 0

Answer:

Answer is (a) as every element has only one image whih is unique

Mila [183]3 years ago

3 0

Answer:

Option A

Step-by-step explanation:

A does not have an x that has 2 or more outputs

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Who's good at math? i need help ASAP. *don't mind the red numbers, i think they're wrong*

shepuryov [24]

Answer:

Seems like someone answered them, because the red writing is right, but here's the answers with explanation

Step-by-step explanation:

The vertex is the point at which the graph changes direction as we go from left to right.
Maximum means the graph is changing direction and going down, so the f(x)-values start becoming smaller. So the graph reached its maximum/highest point and dropped.
Minimum means the graph is changing direction and going up, so the f(x)-values start becoming bigger. So the graph reached its minimum/lowest point and started rising
Now the answers:

Vertex is (-1,0) because if you look at the numbers for f(x) they go, 4 then 1, then 0, but instead of getting smaller they start getting bigger, so it changes as this point and goes up so minimum
vertex is (3,44), when you look at f(x) it goes 143, then 88, then 55, then 44, then it changes and starts getting bigger so minimum
vertex is (-4,-5) but this one is different from the first two. f(x) starts with -17 then -9, then -5, then it sort of stops and stays there, then -5 then drops and gets smaller. So it changes at x=-4 so use this point, immediately before the change and it is maximum
Vertex is (21,500) because f(x) was getting bigger but then it changes and goes down and becomes smaller, so it is maximum
vertex is (1.5,6) the point immediately before the change, and we see f(x) was getting smaller going down, but it changes and goes up and gets bigger so it is minimum
vertex is (0.5,5) because it was getting big then changed and started getting smaller so maximum

8 0

3 years ago

A man and his three children spent $40 to attend a show. A second family of three children and their two parents spent $53 for t

wariber [46]

The cost for the children tickets is $9

5 0

3 years ago

Help Me Please!!! I can't get this wrong

8_murik_8 [283]

Answer:

41ft is your answer

left side=√(12²+12²)=16.97=17ft

perimeter=sum of all side=12+12+17=41ft

6 0

3 years ago

Solve for x. −1/5 (x − 4) = −2

denpristay [2]

X=14. Hope this helped!

4 0

3 years ago

Read 2 more answers

The equation y=9. 5x 0. 4 represents the line of best fit for the distance (in feet) that Marcella traveled over time (in second

Bas_tet [7]

The average speed of Marcella in feet per seconds is 9.5 feet per second.

<h3>How are time taken for travel, distance traveled, and the average speed are related?</h3>

We have this below shown relation between them

$\text{Average speed} = \dfrac{\text{Distance traveled}}{\text{Total time taken to travel that distance}}\\\\or\\\\\text{Total time taken to travel that distance}= \dfrac{\text{Distance traveled}}{\text{Average speed} }$

For the given case, we have:

The equation $y=9.5x + 0.4$ represents the line of best fit for the distance (in feet) that Marcella traveled over time (in seconds)

The line of best fit can be taken as approximately telling about the data points ( y = distance traveled in feet, and x = time spent )

Let the initial time be 'x' with initial distance traveled 'y', then the time after one second will be (x+1), and the distance traveled be $y_1$

The value of y and $y_1$ are calculated as:

$y = 9.5x + 0.4\\y_1 = 9.5(x+1) + 0.4 = 9.5x + 9.9$

Thus, the average speed is calculated at time 'x' as:

$\text{Average speed} = \dfrac{\text{Distance traveled}}{\text{Total time taken to travel that distance}}\\\\or\\\\\text{Average speed} = \dfrac{y_1 - y}{x + 1 - x} = \dfrac{9.5x + 9.9 - 9.5x - 0.4}{1} = 9.5 \: \rm feet/sec$

We could've also used the fact that in the relation of y to x as $y = mx + c$ , 'm' denotes the rate of y as x changes.

Thus, the average speed of Marcella in feet per seconds is 9.5 feet per second.

Learn more about average rate here:

brainly.com/question/12322912

4 0

2 years ago