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Ulleksa [173]
3 years ago
12

A line passes through the point (–2, 7) and has a slope of –5.

Mathematics
2 answers:
Sati [7]3 years ago
6 0

Answer:

B. -1

Step-by-step explanation:

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

-5 = (7 - 2)/(-2 - a)

-5(-2 - a) = 5

10 + 5a = 5

5a = -5

a = -1

ICE Princess25 [194]3 years ago
5 0

Answer:

B

Step-by-step explanation:

Let's create an equation in point-slope form, which is: y-y_1=m(x-x_1), where (x_1,y_1) is the point and m is the slope.

Here, our point is (-2, 7) and our slope is m = -5 so plug these in:

y -7=-5*(x-(-2))

y -7=-5*(x+2)

Now, if (a, 2) lies on this line, then it should satisfy the equation. So plug in a for x and 2 for y:

2 - 7 = -5(a + 2)

-5 = -5(a + 2)

Divide by -5:

1 = a + 2

Subtract 2 from both sides:

a = -1

Thus, the answer is B.

Hope this helps!

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What is the answer to triple a number is the s game as double the number increased by 5
kramer

Answer:

x = 7

Step-by-step explanation:

Let x = the number. Then

                               "Triple a number" means 3x

                                  "is the same as" means =

"double the number increased by 5" means 2x + 7

∴ 3x = 2x + 7

Subtract 2x from each side

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The answer is x = 7.

Check:

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     21 = 14 + 7

     21 = 21

OK.

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Step-by-step explanation:

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