4 years ago

Please help I really need help

Mathematics

1 answer:

Rasek [7]4 years ago

7 0

This is not a risible

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A line has a slope of -3/5. Which ordered pairs could be points on a parallel line? Check all that apply.

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(-2,1) and (3, -2) you can find this by calculating y2-y1 over x2-x1

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Factor Completely. x^4-16x Group of answer choices

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It is given that m=3x+1 and y= (5/1+m^2). Find dy/dx in terms of x.

DiKsa [7]

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${ \underline{ \bf{ \frac{dy}{dx} = - \frac{30m}{ {(1 + {m}^{2}) }^{2} } }}}$

Step-by-step explanation:

${ \bf{m = 3x + 1}} \\ { \sf{ \frac{dm}{dx} = 3 }} \\ \\ { \bf{y = \frac{5}{1 + {m}^{2} } }} \\ \\ { \tt{ \frac{dy}{dm} = \frac{ - 10m}{ {(1 + {m}^{2} )}^{2} } }}$

Using chain rule:

${ \boxed{ \bf{ \frac{dy}{dx} = \frac{dy}{dm}. \frac{dm}{dx} }}}$

${ \sf{ \frac{dy}{dx} = - \frac{10m}{ {(1 + {m}^{2}) }^{2} } \times 3}} \\ \\ { \sf{ \frac{dy}{dx} = - \frac{30m}{ {(1 + {m}^{2}) }^{2} } }}$

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3 years ago

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Choose the equation that represents the line passing through the point (2,-4) with a slope of 1/2? y=1/2x+5, y=1/2x-3, y=1/2x-5,

LUCKY_DIMON [66]

Correct answer: y=1/2x-5

given: point = (2,-4)
slope = 1/2

Explanation: equation of line is: y = mx + c
where, m is the slope
c is the y-intercept

Now,
here, y = 1/2x + c
put, x = 2, y = -4
we get, -4 = (1/2).2 + c
or c = -4 - 1
or c = -5

Hence, equation of line is : y = 1/2x-5

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3 years ago