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Lelu [443]
3 years ago
15

Write the equation of the line passing through the points (-4,7) and (-7,4)​

Mathematics
2 answers:
Mandarinka [93]3 years ago
8 0
The answer is: 1

To find the equation I subtract 4-7 and -7-(-4). I receive the answer of -3/-3.

-3/-3 simplifies 3/3 which is equal to 1.

So the equation is 1? I think this is the correct answer
Mnenie [13.5K]3 years ago
5 0

Answer:

y=x+11

Step-by-step explanation:

You might be interested in
the line with a slope of 1/3 and a y- intercept of - 15 intersects the line passing through which of these pairs of points?
stich3 [128]

Answer:

Options (C), (D) and (E)

Step-by-step explanation:

Slope of the given line = \frac{1}{3}

Any line having same slope will be parallel to the given line otherwise the lines will intersect.

Therefore, we will find the slope of the lines passing through two points given in the options.

Option A

Slope of the line passing through (12, -13) and (15, -12)

m = \frac{y_2-y_1}{x_2-x_1}

   = \frac{-13+12}{12-15}

   = \frac{1}{3}

Therefore, both the lines are parallel having no point of intersection.

Option B

Slope = \frac{-9+7}{18-24}

          = \frac{1}{3}

Both the lines are parallel having no point of intersection.

Option C

Slope = \frac{-20+21}{15-18}

          = -\frac{1}{3}

Therefore, both the lines will intersect.

Option D

Slope = \frac{-15+14}{30-36}

          = \frac{1}{6}

Both the lines will intersect each other.

Option E

Slope = \frac{-11+10}{24-30}

          = \frac{1}{6}

Both the lines will intersect each other at a point.

Options (C), (D) and (E) are the correct options.

6 0
3 years ago
The total surface area of a hemisphere is 300cm2. What is the surface area of the sphere having equal radius to the hemisphere.
raketka [301]

Answer:

400cm²

Step-by-step explanation:

the surface area of the sphere =

4/3 x The total surface area of a hemisphere

=> 4/3 x 300 = 400cm²

7 0
2 years ago
What is the exact value of sin 170⁰ cos 55⁰ + cos 170⁰ sin 55⁰?
Zarrin [17]

Answer:

c

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
15-2x=-7x what does x equal
Degger [83]

Answer:

x = -3

Step-by-step explanation:

15 - 2x = -7x

add 2x

15 = -5x

divide by -5

-3 = x

4 0
2 years ago
Find the midpoint of the segment with the following endpoints.
sergij07 [2.7K]

Answer:

( 5.5 , 4 )

Step-by-step explanation:

Use mid point formula shown in image

first x= (X+X)/2

x=(4+7)/2

x=11/2

x=5.5

y=(Y+Y)/2

y=(2+6)/2

y=8/2

y=4

(5.5,4)

4 0
2 years ago
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