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Helga [31]
3 years ago
8

Solve the following equation. log(3x)=log(2x-4) *

Mathematics
1 answer:
Irina18 [472]3 years ago
5 0

log(3x) = log(2x-4)

taking antilog of both sides:

3x = 2x - 4

3x - 2x = -4                    [subtracting 2x from both sides]

x = -4

and we're done already!

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choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)
mariarad [96]

Answer:

y = -1/2(x -2)

or

y - 4 = -1/2(x + 6)

Step-by-step explanation:

  • Point-slope form: y - y1 = m(x - x1)

For point-slope form, you need two things:

  • A point (x1, y1)
  • The slope (m)

Given:

  • Points (-6, 4) and (2,0)

You already have at least one point, but you still need to find the slope.

To find the slope (m), use the formula: m = y2 - y1/x2 - x1

  • Select which point is your (x2, y2) and which is your (x1, y1)
  • NOTE: It doesn't matter which one you pick as long as you don't "mix-and-match" your x and y-coordinates
  • For example: you can't choose (-6,0) for a point.

I've chosen:

  • (x2, y2) = (2, 0)
  • (x1, y1) = (-6, 4)

Plug in the info into m = y2 - y1/x2 - x1:

  • m = 0 - 4/2 -(-6) = -4/2 + 6 = -4/8
  • Simplify: -4/8 = -1/2
  • m = -1/2

Now plug in the slope and ONE of the points into point-slope form

  • Tip: It doesn't matter which point you choose but I'd recommend choosing the point with all positive numbers, if you can, to prevent the confusion of double negatives:

Answers could be:

  • y = -1/2(x -2)
  • y - 4 = -1/2(x + 6)
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Answer:

The answer is The function is decreasing for all real values of x

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Step-by-step explanation:

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