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padilas [110]
3 years ago
15

Find the slope of the line through each pair of points (-2,-1) and (8,-3)

Mathematics
2 answers:
erastova [34]3 years ago
6 0
Slope = y2 - y1/x2 - x1
          = -3 - (-1)/8 - (-2)
          = -3 + 1/ 8 + 2
          = -2/ 6
          = - 1/3

hope this helps :)

frez [133]3 years ago
5 0
Slope is rise/run so you need the difference between each x and y
-2 and 8 have 10 units between them
-1 and -3 have 2 units
y is the rise, and x is the run
so your slope is 2/10 or 1/5
it is negative because the line is going downward 
final answer is -1/5
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Bernita and Derek each plot a number on a number line. The numbers are unique but have the same absolute value. The sum of the a
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6 0
3 years ago
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PLEASE HELP I POSTED LIKE 2 HOURS AGO WITH THIS QUESTION AND I NEED HELP:)
garik1379 [7]

A system is inconsistent when there are no solutions between the two equations. Graphically, the lines will be parallel (they never meet!) and the slopes will be the same. But the y-intercepts will be different.

Let's look at the four equations, with each solved as needed, into y = mx + b form.

A: 2x + y = 5

y = 5 - 2x

y = -2x + 5

Compared to y = 2x + 5, the slopes are different, so this system won't be inconsistent. Not a good choice.

B: y = 2x + 5

Compared to y = 2x + 5, the slopes are the same and the y intercepts are the same. This system has infinitely many solutions. Not a good choice.

C: 2x - 4y = 10

-4y = 10 - 2x

-4y = -2x + 10

y = 2/4x -10/4

Here the slopes are different, so, like A this is not a good choice.

D: 2y - 4x = -10

2y = =10 + 4x

2y = 4x - 10

y = 2x - 5

Compared to y = 2x + 5 we have the same slopes and different y intercepts.  The lines will be parallel and the system is inconsistent.


Thus, D is the best choice.

7 0
3 years ago
Read 2 more answers
HI I NEED HELP WITH THIS!!! SOMEONE ANSWER ASAP PLS
padilas [110]
10
the hypotenuse is the largest side
so out of 6,8,10
10 is the largest
5 0
2 years ago
The equations in this sytem were added to solve for x. What is the value of x?
svetoff [14.1K]

The value of x would be 1.

5 0
2 years ago
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