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3 years ago

Identify the domain of the function

Mathematics

2 answers:

sertanlavr [38]3 years ago

7 0

The answer is C. is right

Roman55 [17]3 years ago

4 0

Answer:

C) (-4, 4]

Step-by-step explanation:

We have been given a graph of the function as shown in the picture. Now using that graph, we need to find the domain of the function and match with the given choices to find the correct domain.

Where given choices are :

A) [-4, 4)

B) [-4, 4]

C) (-4, 4]

D) (-4, 4)

Remember that we use ( or ) for open circle. and [ or ] for close circle.

Hence correct domain is

C) (-4, 4]

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We have a negative relationship between number of drinks consumed and number of marks in a driving test. One individual scores 3

lbvjy [14]

Answer:

C. Driving test scores (y-axis) will be 9 [individual who scored 3 on drink consumption and 3 [individual who scored 5 on drink consumption].

Correct as we can see:

$y(3) =-3(3) +18 = -9 +18 =9$

$y(5) =-3(5) +18 = -15 +18 =3$

Step-by-step explanation:

Let's define some notation:

y= represent the driving test scores

x= represent the number of drinks consumed

We know this info given: "What will be their respective scores on the driving test if the intercept is 18 and the slope -3?" So then we can create the following linear model:

$y = -3x +18$

And now we have two values for x we can replace and see what we got:

$y(3) =-3(3) +18 = -9 +18 =9$

$y(5) =-3(5) +18 = -15 +18 =3$

And if we analyze one by one the options we got this:

A. Driving test scores (y-axis) will be 27 [individual who scored 3 on drink consumption and 33 [individual who scored 5 on drink consumption].

False.

$y(3) =-3(3) +18 = -9 +18 =9$

$y(5) =-3(5) +18 = -15 +18 =3$

B. It is not possible to predict from negative relationships.

False, we have the linear model given and we can find the predicted values.

C. Driving test scores (y-axis) will be 9 [individual who scored 3 on drink consumption and 3 [individual who scored 5 on drink consumption].

Correct as we can see before:

$y(3) =-3(3) +18 = -9 +18 =9$

$y(5) =-3(5) +18 = -15 +18 =3$

D. Driving test scores (y-axis) will be 51 and 87 [individual who scored 5 on drink consumption].

False.

4 0

3 years ago