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3 years ago

The equation y = 2x + 1 is changed to y = 2x - 1. How does this change the graph of the line?

2 answers:

7 0

Y = 2x + 1
y = 2x - 1

so the 1st one has a y int of 1 and the second one has a y int of -1...so the original line will shift down 2 units

Mademuasel [1]3 years ago

7 0

Answer:

D) The original line will shift down 2 units.

Step-by-step explanation:

The rate of changes [slopes] remain the same [2], so all you need to do is figure out how much far $\displaystyle [0, 1]$ is from $\displaystyle [0, -1],$ and that would be two units:

$\displaystyle -1 + 2 = 1$

I am joyous to assist you anytime.

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telo118 [61]

<h3>Answer:</h3>

-3

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3 years ago

Help my dear friend answer this:

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3 years ago

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Just before a referendum on a school budget, a local newspaper polls 402 voters to predict whether the budget will pass. Suppos

Sliva [168]

Answer:

21.21%

Step-by-step explanation:

Assume that proportion of support follows normal distribution.For resulting in defeat the proportion of support should less than 0.5.Given that the proportion of support is p= 0.52.

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We know that standard deviation is given as

$\sigma = \sqrt {\dfrac {p(1-p)}{n}}$

Now by putting the values

$\sigma = \sqrt {\dfrac{0.52\times 0.48}{402}}$

σ=0.0249

Proportion of support follows normal distribution with mean is 0.52 and standard deviation is 0.0249

We know that $Z=\dfrac{\bar{X}-\mu }{\sigma }$

$Z=\dfrac{0.5-0.52 }{0.0249}$

Z= -0.80

So P(Z<-.80) =0.2118 from standard table.

So the probability of news paper to predict defeat is 21.21%

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3 years ago

Illustrate the <PAT and <LAB are vertical angle?

timama [110]

Answer

1. Draw a diagonal straight line PT.

2.Draw an another straight diagonal line LB that intersect at a point.

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Using Euclid Book 1 Proposition 15

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3 years ago

The ratio of boys to girls in a class is 4 to 5. There are 20 boys in the class. How many girls are in the class

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3 years ago