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lana66690 [7]
3 years ago
14

Someone please help, its for a hw assignment I have due today. What is the equation of the line through (3, 7) that is perpendic

ular to the line through points (-1, -2) and (5, 3)?
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
7 0

The required equation is:

y=-\frac{6}{5}x+\frac{53}{5}

Step-by-step explanation:

Let l_1 be the line through  (-1, -2) and (5, 3)

and l_2 be the line we require which passes through (3,7)

We have to find the lope of l_1 first

m_1=\frac{y_2-y_1}{x_2-x_1}\\=\frac{3-(-2)}{5-(-1)}\\=\frac{3+2}{5+1}\\=\frac{5}{6}

we have to find the equation of line perpendicular to l1

The product of slopes of two perpendicular lines is -1

Let m_2 be the slope of l_2

Then

\frac{5}{6}*m_2=-1\\m_2=-\frac{6}{5}

The general slope-intercept form is:

y=mx+b

Putting the value of slope

y=-\frac{6}{5}x+b

To find the value of b, we will put (3,7) in the equation

7=-\frac{6}{5}(3)+b\\7=-\frac{18}{5}+b\\b=7+\frac{18}{5}\\b=\frac{35+18}{5}\\b=\frac{53}{5}

Putting the values of b and m in standard slope intercept form:

y=-\frac{6}{5}x+\frac{53}{5}

Hence,

The required equation is:

y=-\frac{6}{5}x+\frac{53}{5}

Keywords: Equation of line

Learn more about equation of line at:

  • brainly.com/question/702593
  • brainly.com/question/7128279

#LearnwithBrainly

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The percentage of increase was 87.027... %

<em><u>Explanation</u></em>

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7 0
3 years ago
What are the steps to solve for: 1/5(x+5)=1/4(x-3)+1
andrew11 [14]
Step 1. Simplify \frac{1}{5} (x+5) to \frac{x+5}{5}

\frac{x+5}{5} = \frac{1}{4} (x-3)+1

Step 2. Simplify \frac{x+5}{5} to 1+ \frac{x}{5}

1+ \frac{x}{5} = \frac{1}{4} (x-3)+1

Step 3. Simplify \frac{1}{4} (x-3) to \frac{x-3}{4}

1+ \frac{x}{5} = \frac{x-3}{4} +1

Step 4. Cancel 1 on both sides

\frac{x}{5} = \frac{x-3}{4}

Step 5. Multiply both sides by 20 (the LCM of 5,4)

4x=5(x-3)

Step 6. Expand

4x=5x-15

Step 7. Subtract 5x from both sides

4x-5x=-15

Step 8. Simplify 4x-5x to -x

-x=-15

Step 9. Multiply both sides by -1

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Done! :) Hope this helps! :)








3 0
3 years ago
Please help me. if you can help me answer multiple questions only 3. offering 30 points for it
lubasha [3.4K]

Answer:

(-9, -5)

Step-by-step explanation:

Ok, so when you move an image to the right, you are moving along the x-axis, and when you move up, you are moving up the y-axis. So if the altered image is (x,y) and the values are (-5, -1), you reverse what has been done to the image. In this case, since we moved to the right 4 units, we know that means we added 4 to x, so we subtract 4 to get -9. And then, for the y-value, because we added 4, we do the opposite, and subtract 4 to get -5. So the pre-image should be (-9, -5)

7 0
3 years ago
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