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Oksi-84 [34.3K]
3 years ago
8

9x-4y=7

Mathematics
2 answers:
dlinn [17]3 years ago
8 0
9x - 4y = 7
-4y = -9x + 7
y= 9/4x - 7/4

slope of perpendicular line = -4/9
slope of parallel line = 9/4
Nadusha1986 [10]3 years ago
4 0
Well if you change it to standard form, you get y=9/4x+7/4. The important part of that is 9/4x. If a line is perpendicular, the slopes are opposite. The slope of a perpendicular line would be -4/9x, don't forget the negative. And a parallel line has the same slope so any line with 9/4 is parallel but if the line has the same b value it is coinciding, not parallel and those aren't the same.
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Answer:

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Step-by-step explanation:

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The question is incomplete, the complete question is;

Chelsea dropped a bouncy ball off the roof while Nery recorded its rebound height. The table shows their data. Note that the 0 in the "Bounce " column represents the starting height. To what family does the function belong? Explain how you know. b. Show the data as a sequence. Is the sequence arithmetic, geometric, quadratic, or something else? Justify your answer.

Bounce Rebound Height 0 800 cm 1 475 cm 2 290 cm 3 175 cm 4 100 cm 5 60 cm

Answer:

exponential

Geometric

Step-by-step explanation:

We have to test the data to know where it falls in. Let us just take three data points for our test.

To test if it is AP;

475 - 800 = -325

290 - 475 = 185

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Let us test if it is exponential with three data points

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7 0
3 years ago
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dem82 [27]

Answer:

y = 2x - 19

Step-by-step explanation:

Slope-intercept form: y = mx + b

y = (x , y) = 1

m = slope = 2

x = (x , y) = 10

b = y-intercept

Plug in the corresponding numbers to the corresponding variables:

1 = 2(10) + b

First, simplify, and then isolate the variable, b. Note the equal sign, what you do to one side, you do to the other.

First, multiply 2 with 10:

1 = (2 * 10) + b

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Next, subtract 20 from both sides of the equation:

1 = b + 20

1 (-20) = b + 20 (-20)

1 - 20 = b

b = -19

Plug in 2 for m, and -19 for b.

y = 2x - 19 is your slope-intercept form.

~

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3 years ago
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Answer:

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Step-by-step explanation:

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