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Tom [10]
3 years ago
8

Find the slope intercept equation that passes through (-3,8) and is perpendicular to the line with the equation: x-7y=12

Mathematics
1 answer:
mafiozo [28]3 years ago
4 0

Answer:

C.  y = 7x + 29 .

Step-by-step explanation:

First find the slope of the given line:

x - 7y = 12

7y = x - 12

y = 1/7 x - 12/7

The slope = 1/7 so the slope of the line perpendicular to this line is

- 1 / -1/7 = 7.

Finding the equation of the  required line:

y - y1 = m(x - x1)

y1 = 8 , m = 7 and x1 = -3:

y - 8 = 7(x + 3)

y = 7x + 21 + 8

y = 7x + 29  answer.

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Can anyone answer this for me?
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2 years ago
Parallelogram FGHI on the coordinate plane below represents the drawing of a horse trail through a local park.
Setler [38]
The answer is <span>A)(13, 8).

Distance I to F is:     yf - yi = -1 - (-4) = -1 + 4 = 3
Distance D to A is:   ya - yd = 8 - 2 = 6

</span>Distance D to A : Distance I to F = 6 : 3<span>
6 : 3 = 2, so scale factor is 2.

Among all choices, we see that the y point of another corner is 8, so we need to find x point.

Distance I to H is:                 xh - xi = -2 - (-7) = -2 + 7 = 5
Distance A to x corner is:    x - xa = x - 3

Since </span>Distance I to H is 5, and scale factor is 2, we have:
Distance A to x corner : Distance I to H = 2
Distance A to x corner = 2 * Distance I to H = 2 * 5 = 10

Distance A to x corner is:    xa - x = x - 3 = 10
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4 0
2 years ago
Read 2 more answers
Please help me :). I'll give brainiest
Dennis_Churaev [7]

Answer:

axis of symmetry: x=3, vertex: (3,23)

Step-by-step explanation:

-\frac{b}{2a}=-\frac{12}{-4}=3

axis of symmetry(x-value of the vertex): x=3

input this value into the function to get the vertex

-2(3)^{2}+12(3)+5

-18+36+5

18+5

23 is the y-value of the vertex

(3,23)

plz mark me brainliest. :)

4 0
2 years ago
What is the value of b?
docker41 [41]
Do do this problem, you need to use the Law of Cosines!

You are trying to find length b, so

b^2 = a^2 + c^2 - 2ab cos B
b^2 = 22^2 + 28^2 - 2(22)(28) cos 34
b^2 = 484 + 784 - 1232 cos 34
b^2 = 1268 - 1232 cos 34
b^2 = 246.6257
b = 15.7 yards

Hope this helps!
3 0
3 years ago
Read 2 more answers
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