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3 years ago

What is the equation of the line that passes through the point (-4, 7) and has an

Mathematics

1 answer:

labwork [276]3 years ago

7 0

Answer:

I beleive it would be y = x + 7

Step-by-step explanation:

Im sorry if im wrong, its just you didnt supply the other coordinates

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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre

BartSMP [9]

Answer:

x -y =4

Step-by-step explanation:

First find the slope

m = (y2-y1)/(x2-x1)

= (1- -4)/(5 - 0)

= (1+4)/(5-0)

5/5

= 1

Then we can use slope intercept form

The slope is 1 and the y intercept is -4

y = mx+b

y = 1x-4

We want it in standard form

Ax + By = C where A is a positive integer

Subtract x from each side

-x +y = -4

Multiply by -1

x -y =4

8 0

2 years ago

Write the equation in standard form. Identity the center and radius. x² + y2 + 8x-4y-7=0

lorasvet [3.4K]

Answer:

equation;

$(x + 4) {}^{2} + (y - 2) {}^{2} = 27$

Center (-4,2)

Radius is

$3 \sqrt{3}$

Step-by-step explanation:

Since the x^2 and y^2 have the same coeffiecent this will be a circle in a form of

$(x - h) {}^{2} + (y - k) {}^{2} = {r}^{2}$

Where (h,k) is center

r is the radius

So first we group like Terms together

${x}^{2} + 8x + {y}^{2} - 4y - 7 = 0$

Add 7 to both sides

${x}^{2} + 8x + {y}^{2} - 4y = 7$

$( {x}^{2} + 8x) +( {y}^{2} - 4y) = 7$

Since the orginal form of the equation of the circle has a perfect square we need to complete the square for each problem

$(\frac{8}{2} ) {}^{2} = 16$

and

$( - \frac{4}{2} ) {}^{2} = 4$

so we have

${x}^{2} + 8x + 16 + {y}^{2} - 4y + 4y = 7 + 16 + 4$

${x}^{2} + 8x + 16 + {y}^{2} - 4y + 4y = 27$

$(x + 4) {}^{2} + (y - 2) {}^{2} = 27$

To find our center, h is -4 and k is 2

so the center is (-4,2)

The radius is

$\sqrt{27} = 3 \sqrt{3}$

So the radius is 3 times sqr root of 3.

8 0

2 years ago

How many seconds will it take to get to 150 feet if you can run 11 feet per second

postnew [5]

Answer:

13.64 seconds

Step-by-step explanation:

150 / 11 = 13.636

8 0

3 years ago

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two coins and a number cube are tossed at the same time. what is the approximate possibility that the coins show different sides

Stolb23 [73]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
The results are independent:
P(2 heads) = 1/4
P(roll a 4) = 1/6
P(2 heads and a 4) = (1/4)(1/6) = 1/24

6 0

3 years ago

PLEASE HELP IS THERE ANYONE ON THIS APP THAT CAN HELP!

Nesterboy [21]

Answer: The correct answer is 18cm

Step-by-step explanation:

8 0

3 years ago

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