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____ [38]
3 years ago
9

[PLEASE HELP ASAP]

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
7 0

Answer:

B:  3x + y = − 7

Step-by-step explanation:

As we move from (-5, 8) to (-3, 2), x increases by 2 and y decreases by 6.  Thus, the slope of the line thru these two points is m = rise / run = -6/2 = -3.

Applying the point-slope form of the equation of a straight line,

y-k = m(x-h), we obtain y - 2 = -3(x + 3).

Alternatively,                 y       = -3x - 9 + 2, or    

                                      y       = -3x - 7

and this can be rewritten in the form 3x + y = -7 (Answer B)

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Answer:

1. Yes

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3. x > -4

Step-by-step explanation:

For #3:

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2.1x + 8.4x > 1.2 - 43.2

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The position of an open-water swimmer is shown in the graph. The shortest route to the shoreline is one that is perpendicular to
Harman [31]

*attachment contains the omitted graph

Answer:

y = -\frac{4}{3}x + 9

Step-by-step explanation:

The equation that represents the path of the swimmer to the shoreline can be represented in the slope-intercept form, given as y = mx + b.

Where,

Slope (m) = the negative reciprocal of the slope of the shoreline, since it is perpendicular to it = ??

y-intercept (b) = ??

Find the slope of the shoreline using, (0, 1) and (4, 4):

m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{4 - 1}{4 - 0} = \frac{3}{4}.

Since the slope of the shoreline is ¾. The slope of the path of the swimmer would be the negative reciprocal of ¾.

The negative reciprocal of ¾ = -⁴/3.

The slope of the swimmer's path = -⁴/3.

Using the coordinate of the point of the swimmer (6, 1), and the slope of the path, we can find b, the y-intercept of the path.

Substitute x = 6, y = 1 and m = -⁴/3 into y = mx + b, to find b.

Thus:

1 = (-⁴/3)(6) + b

1 = -8 + b

Add 8 to both sides

1 + 8 = b

9 = b

b = 9

Substitute m = -⁴/3 and b = 9 into y = mx + b.

✅The equation that represents the path would be:

y = -\frac{4}{3}x + 9

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1.20 could be a possibility...
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artcher [175]
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