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Elodia [21]
3 years ago
9

Write an equation for the line that passes through (4,-6) and (-7,-6). Is the line parallel or perpendicular to the y-axis?

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

y = -6, perpendicular

Step-by-step explanation:

You can use the points to find the slope of the line:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} =\frac{-6-(-6)}{-7-4} =\frac{-6+6}{-7-4}=\frac{0}{-11}=0

Then, using point-slope form, choose one set of coordinates to use for y1 and x1:

y-y_{1}=m(x-x_{1})

y-(-6)=0(x-4)

y+6=0

y=-6

Since the slope of the line is zero, it's a horizontal line. The y-axis is a vertical line, which means that the line is perpendicular to the y-axis.

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I need to show how to find these solutions 1/4 and 3/4 by completing the square!
Arlecino [84]

Answer:

See explanation, and ask for more details if unclear!

Step-by-step explanation:

The perfect square of this equation is x^2-x+\frac{1}{4}, since the square would be (x-\frac{1}{2})^2. 1/4=4/16, meaning that you can set up the equation in the following way:

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8 0
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What is the result when 1/8x - 2 5/7 is subtracted from 3 1/4x + 7 1/14
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Let's break it down:
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1/8x - 2 5/7

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2 5/7 is equivalent to 2 10/14

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1/8x - 2 10/14          7 1/14 - (-2 10/14) = 9 11/14
------------------           - - = +
2 1/8x + 9 11/14
 


5 0
3 years ago
Please help me with these two i have to send it after class!!!!!
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the first one is the answer to #1

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