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Elodia [21]
3 years ago
15

Which of the following represents the graph of the equation y = -2x + 1?

Mathematics
2 answers:
STALIN [3.7K]3 years ago
5 0

Answer:

Graph D

Step-by-step explanation:

<u>For graph A)</u>

Equation would be: y = 2x + 1

<u>For graph B)</u>

Equation would be: y = 2x - 1

<u>For graph C)</u>

Equation would be: y = -2x - 1

<u>For graph D)</u>

Equation would be: y = -2x + 1

Hope this helps!

Vitek1552 [10]3 years ago
4 0

answer : D

steps :

graph the line using the slope and y-intercept, or two points.

slope: −2 (down 2, right 1)

y-intercept: (0,1) (where the line intercepts the y axis)

your points for your line:

\left[\begin{array}{ccc}x&y\\0&1\\1&-1\end{array}\right]

solution : the graph in answer D.

hope this helps !

- audrey ♡

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Each marble bag sold by Lashonda's Marble Company contains 5 green marbles for every 3 red marbles. If a bag has 24 red marbles,
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3 years ago
Find the slope of the line passing through the points (7, -1) and (2, -8).
Ugo [173]

Answer:

\frac{4}{5}

Step-by-step explanation:

We have to use the slope formula: m = slope

(x1, y1) = coordinates of the first point in the line

(x2, y2) = coordinates of the second point in the line

Here, we'll plug into our given points to give; \frac{7--1}{2--8}

Solving this, we get, \frac{8}{10}, but we're not done, as this fraction can be reduced.

Diving both sides of the fraction by 2, we get our final answer of \frac{4}{5}.

8 0
3 years ago
A circular region has a population of about 15,500 people and a population density of about 775 people per square kilometer. Fin
Reil [10]

Answer:

2.5 km

Step-by-step explanation:

First, find the area of the region:

  • A circular region has a population of about 15,500 people;
  • A population density of about 775 people per square kilometer.

So, there are 15,500 :775=20 square kilometers.

Now, let x kilometers be the radius of the circular region, then

A_{\text{circilar region}}=\pi r^2\\ \\20=\pi r^2\\ \\r^2=\dfrac{20}{\pi}\approx 6.366198\\ \\r=\sqrt{3.366198}\approx 2.523

To the nearest tenth this is 2.5 km.

6 0
3 years ago
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