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Natalija [7]
3 years ago
8

Line l has the equatin y= 1/3x. Find the equation of the image l after a dilation with a scale factor of 1/2, centered at the or

igin.

Mathematics
2 answers:
Romashka [77]3 years ago
4 0

Answer:

sssssssssssssssssssssssssssssssss

Step-by-step explanation:

HACTEHA [7]3 years ago
3 0

Answer:

y = \frac{1}{3} x + \frac{8}{3}

Step-by-step explanation:

The equation of the line I is  y = \frac{1}{3} x

Scale factor = \frac{1}{2}, center = (0, 0)

To find the dilated line, we need follow the steps below:

Step 1: Draw the equation of the given line I

Step 2: Let's take a point from the line.

Let's take (2, 6) which is on the line I.

Let's find the dilated point by the scale factor  \frac{1}{2}

Multiply the point (2, 6) by  \frac{1}{2}, we get

(2.\frac{1}{2} , 6.\frac{1}{2} ) = (1, 3)

Step 3: Write the equation of the new line (Image I)

The dilated line has the same slope.

So slope (m) =  \frac{1}{3}

x = 1 and y = 3

Now let's find the slope intercept.

y = mx + b

Plug in x = 1, y = 3 and slope (m) =  \frac{1}{3}

3 =  \frac{1}{3}.1 + b

3 = \frac{1}{3} + b

b = 3 - \frac{1}{3}

b = \frac{3.3 -1}{3} = \frac{9 -1}{3} = \frac{8}{3}

Now let's find the equation of the image I.

y = mx + b

y = \frac{1}{3} x + \frac{8}{3}

The required equation is y = \frac{1}{3} x + \frac{8}{3} after the dilation of scale factor.

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Fiesta28 [93]

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I think the answer is 7.

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What is equivalent to 6/8?
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leonid [27]

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Step-by-step explanation:

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3 years ago
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What value of x satisfies the equation 5(x – 3) – 2(x + 1) = 4?
hjlf

Answer:

x = 7

Step-by-step explanation:

To solve:

Distribute 5 among everything inside the first parentheses. You'll get 5x - 15.

Next distribute -2 among everything in the second parentheses. You'll get

-2x - 2.

<u>All together: 5x - </u><u>15</u><u> </u><u>-</u><u>2x </u><u>-</u><u> </u><u>2</u><u> </u><u>= 4</u>

Now combine like terms:

5x - 2x = 3x and -15 - 2 = - 17

<u>All</u><u> </u><u>together</u><u>: 3x -</u><u> </u><u>17 = 4</u>

Add 17 on both sides to get 21, and then divide both sides by 3. Answer is x = 7.

________________________________

Last, don't forget to check your work.

You can plug in 7 for x to get:

5(7 - 3) = 20

5 × 7 = 35

5 × -3 = -15

35 - 15 = 20

-2(7 + 1) = -16

-2 × 7 = -14

-2 × 1 = - 2

-14 -2 = -16

<u>20 - 16 = 4</u>

⬆⬆⬆Therefore this is correct.

Sorry this is a bit lengthy, but hope this helps :)

5 0
2 years ago
How to do this question
Dafna11 [192]

Answer:

0

Step-by-step explanation:

Given:

f(x) = \begin{cases} -x -2 &, &x < 0 \\ x &, &0 \leqslant  x < 3 \\ x^2 -1 &, &3 \leqslant x \end{cases}

Solving for f(0):

f(0) = x \text{ when } x = 0 \\ f(0) = 0

6 0
2 years ago
Read 2 more answers
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