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3 years ago

16. Find the coordinates of point C if B(-3, 1) is the midpoint of segment AC 1

Mathematics

1 answer:

suter [353]3 years ago

4 0

Answer:

(-7, -5)

Step-by-step explanation:

Point A is at (1,7) and point B is at (-3,1). To get from the x-coordinate of A to the x-coordinate of B, you have to move right 4, or you have to subtract 4 from the x-coordinate of point A. To get to the x-coordinate of point C, you must do the same since B is the midpoint. -3 - 4 is -7. To get from the y-coordinate of A to the y-coordinate of B, you have to move down 6, or you have to subtract 6 from the y-coordinate of point A. 1 - 6 is -5.

The coordinates of point C are thus (-7,-5).

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3 years ago

Can anyone solve this? If so tell me and make sure u know what ur doing please

raketka [301]

Answer:

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Step-by-step explanation:

To find the slope of a line, you need to find the $\frac{rise}{run}$ between two points. I will be using the points (-3, 2) and (-1, -2).

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6 0

3 years ago

Which description best compares the graphs given by the equations:

nexus9112 [7]

x - 5y = -5, -5x - 25y = 25

First, you'll need to get the x variable by itself.

x - 5y = -5
 +5 +5
 x = 0
So x is plotted on the 0.

For the second part of the first equation, you'll be looking for what the y variable represents.

x - 5y = -5
-x -x
 -5y = -5
 5 5
 y = 1
So y is plotted on the 1 on the vertical line above the 0.

For the first part of the second equation, you'll do the same thing as in the first equation.

-5x - 25y = 25
 +25 +25
 -5x = 50
 5 5
x = 10
So the x for this equation is plotted on 10 on the horizontal line.

For the second part of the second equation, you will do the same thing as in the first equation.

-5x - 25y = 25
+5 +5
 -25y = 30
 25 25
y = 1.2
So the y for the second half of the second question is plotted on 1.2 on the vertical line.

<h2>Answer: B) Perpendicular</h2>

Perpendicular means the lines may or may not be of equal length and they will not be perfectly in line with each other.

Parallel means the lines may or may not be of equal length but will be perfectly in line with each other.

Intersecting means the lines may or may not be of equal length but will touch each other.

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2 years ago