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3 years ago

Which statements describe the graph of y = 3x - 1+2? Select three options.

Mathematics

2 answers:

Tasya [4]3 years ago

5 0

Answer:

<h2>The graph has a domain of all real numbers.</h2><h2>The graph has a y-intercept at (0, 1).</h2>

Step-by-step explanation:

The given function is

$y=3x-1+2$

This is linear function, the domain and range of linear functions are always all real numbers, because they don't have any kind of restriction. So, the first option is right.

In addition, linear function are represented by a line which has interceptions with each axis. The interceptions with the vertical axis is when $x=0$ :

$y=3x-1+2\\y=3(0)+1=1$

So, the fourth option is right,

Similarly, the interception with the horizontal axis is when $y=0$ :

$0=3x-1+2\\-3x=+1\\x=-\frac{1}{3}$

This means the last option is not correct.

Therefore, all options that apply are

The graph has a domain of all real numbers.
The graph has a y-intercept at (0, 1).

TiliK225 [7]3 years ago

4 0

Answer:

your answer is A,D,and E

verified by e2020 teacher

Step-by-step explanation:

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Please help me on this

Stolb23 [73]

Answer:

AX = 14

Step-by-step explanation:

The medians of a triangle intersect at its centroid.

The position of the centroid X from the vertex A is

AX = $\frac{2}{3}$ AL = $\frac{2}{3}$ × 21 = 14

5 0

3 years ago

Find the slope of the line that goes through the given points.<br> (-10,5) and (-7, - 10)

Mnenie [13.5K]

Answer:

-5

Step-by-step explanation:

Slope is y2-y1/ x2-x1. So -10 -5/ -7 +10 = -15/3. Then you simplify that to -5

4 0

3 years ago

Read 2 more answers

Need help with these math questions

PSYCHO15rus [73]

$\sqrt{16-x}$ x = 8

Since x = 8, you can plug in/substitute 8 for "x" in the equation:

$\sqrt{16-x}$

$\sqrt{16-8}$

$\sqrt{8}$

2.82842

2.83 You answer is the 4th option

$\sqrt{x+7}$ x = 9

Plug in 9 for "x" in the equation

$\sqrt{x+7}$

$\sqrt{9+7}$

$\sqrt{16}$

4 Your answer is the 1st option

4 0

3 years ago

Based on experience, the Ball Corporation’s aluminum can manufacturing facility in Ft. Atkinson, Wisconsin, knows that the metal

Veronika [31]

Answer:

a) 3.128

b) Yes, it is an outerlier

Step-by-step explanation:

The standardized z-score for a particular sample can be determined via the following expression:

z_i = {x_i -\bar x}/{s}

Where;

\bar x = sample means

s = sample standard deviation

Given data:

the mean shipment thickness (\bar x) = 0.2731 mm

With the standardized deviation (s) = 0.000959 mm

The standardized z-score for a certain shipment with a diameter x_i= 0.2761 mm can be determined via the following previous expression

z_i = {x_i -\bar x}/{s}

z_i = {0.2761-0.2731}/{ 0.000959}

z_i = 3.128

From the standardized z-score

If [z_i < 2]; it typically implies that the data is unusual

If [z_i > 2]; it means that the data value is an outerlier

However, since our z_i > 3 (I.e it is 3.128), we conclude that it is an outerlier.

6 0

3 years ago

A research study was performed to determine if more than 30% of first-grade students at one school have entered Piaget’s concret

suter [353]

Answer:

Type I error

Step-by-step explanation:

A type I error occurs if the null hypothesis is rejected when it is actually true.

Type I Type II

Reject null when true Fail to reject null when not true

Null hypothesis: ∪ = 30%

Alternative hypothesis: ∪ > 30%

The researchers concluded that more than 30% of first-grade students at this school have entered the concrete operational stage of development and they rejected the null hypothesis.

However, a census actually found that in the population of all first graders at this school, only 28% have entered the concrete operational stage.

A type I error has been made because in actuality the null hypothesis was true but was rejected.

7 0

3 years ago