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4 years ago

Please help me with this math problem.

Mathematics

1 answer:

garri49 [273]4 years ago

7 0

Answer:

-x + 8y = 56

Step-by-step explanation:

To get rid of fractions, multiply equation by 8.

It becomes 8y = x + 56

Now get the x to the side with the 8y by subtracting x.

-x + 8y = 56

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Plz help me with this question

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3 years ago

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If BC = 2x, CD = 7x, and BD = 9, what is CD?

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3 years ago

....................

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2 2/5 x 2 = 4.8 -4.8 8.4 -8.4

Zinaida [17]

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Step-by-step explanation:

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What is the slop intercept form of a line that passes threw (4,-4) and (8, -10)

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For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cut-off point with the y axis

We have two points through which the line passes, so we can find the slope:

$(x_ {1}, y_ {1}) :( 4, -4)\\(x_ {2}, y_ {2}) :( 8, -10)\\m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {-10 - (- 4)} {8-4} = \frac {-10+ 4} {4} = \frac {-6} {4} = - \frac {3} {2}$

Thus, the equation is of the form:

$y = - \frac {3} {2} x + b$

We substitute one of the points and find "b":

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Finally, the equation is of the form:

$y = - \frac {3} {2} +2$

ANswer:

$y = - \frac {3} {2} +2$

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3 years ago