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Zina [86]
3 years ago
8

Write the equation for the line parallel to the given line 4x-3y=9 and through the point (3, -1). Then Write the answers in slop

e intercept and standard form
Mathematics
1 answer:
Katyanochek1 [597]3 years ago
7 0

k:y=m_1x+b_1;\ l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1\cdot m_2=-1\\\\k\ ||\ l\iff m_1=m_2

We have:

4x-3y=9\ \ \ \ |-4x\\\\-3y=-4x+9\ \ \ \ |:(-3)\\\\y=\dfrac{4}{3}x-3\to m_1=\dfrac{4}{3}

y=m_2x+b\\\\m_2=m_1\to m_2=\dfrac{4}{3}

y=\dfrac{4}{3}x+b

The line passest through the point (3, -1). Substitute the coordinates of the point to the equation of a line:

-1=\dfrac{4}{3}\cdot3+b\\\\-1=4+b\ \ \ \ |-4\\\\b=-5

y=\dfrac{4}{3}x-5\ \ \ \ |\cdot3\\\\3y=4x-15\ \ \ \ |-4x\\\\-4x+3y=-15\ \ \ \ |\cdot(-1)\\\\4x-3y=15

Answer: \boxed{y=\dfrac{4}{3}x-5;\ 4x-3y=15}

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Solve for x. <br> 25x=65<br> x = 1225 <br> x = 125<br> x = 3 <br> x = 6
masya89 [10]

25x=65

We divide 25 to cancel it out.

65/25=2.6

I would assume 3, because 2.6 is 3 when rounded up.

---

hope it helps

3 0
3 years ago
In Exercises 1-4, ill in the blank.
EleoNora [17]

1. Supplementary

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4 0
3 years ago
I am a 4 digit number larger than 2,500. No two of my digits are the same. The product of the thousands digit and the hundreds d
gulaghasi [49]

Answer:

After 5 minutes of hitting my head on a wall I found your answer... 3256

Step-by-step explanation:

4 0
3 years ago
Write an equation in slope-intercept form of the line that passes through the points (-6, -10) and (1,4).​
vova2212 [387]

Answer:

y = mx + 1/2

Step-by-step explanation:

(x,y)

- Plot each point on a graph

- The line should go from the bottom left (-6,-10) to the top right (1,4)

- Count how many spaces are on the y-axis from -6 to 1 for numerator

- Count how many spaces are on the x-axis from -10 to 4 for denominator

- Positive slope

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7 0
3 years ago
Solve the equation for the indicated variable. Please help ASAP!!!!! :(<br> A=(730x)/(d^2) for x
zvonat [6]

First let's get rid of the d^2 in the denominator of the fraction on the right side of the equation. This will help to get only x and a coefficient on one side of the equation:

A = \dfrac{730x}{d^2}

d^2A = 730x


Now, simply divide by 730 to find x:

d^2A = 730x

\boxed{\dfrac{d^2A}{730} = x}

3 0
3 years ago
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