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Viktor [21]
3 years ago
5

Find the slope of a line that has an equation of 13/4x+17/4y=-17

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

slope = -13/17

Step-by-step explanation:

(13/4)x + (17/4)y = -17

4*((13/4)x) + 4*((17/4)y) = 4(-17)

13x + 17y = -68

17y= -13x - 68

17y/17= -13x/17 - 68/17

y = (-13/17)x - 4 <<< slope intercept form: y = mx + b; m = slope

m = -13/17

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In slope-intercept form, what is the equation of a line perpendicular to y = 2x+ 7 that passes through the point (5, 8)?
Masja [62]

Find slope as negative reciprocal of 2 => m=-1/2

y=mx + b

8=5(-1/2) +b

b=21/2

y= -1/2x +21/2

4 0
3 years ago
ellen had 25 hair clips,7 of them were blue and the rest are purple.what percent of hair clips were purple
strojnjashka [21]
Answer=72%

25-7=18purple clips

  18       x
____=____
  25     100

cross multiply
25x=1800
divide both sides by 25
x=72%
6 0
3 years ago
Read 2 more answers
What is an equation of the line that is perpendicular to −x+2y=4 and passes through the point (−2, 1) ?
Elza [17]

Answer:

y=-2x-3

Step-by-step explanation:

Since our equation is in standard form Ax+By=C we must first manipulate the equation so that we have it in the slope-intercept form such that y=mx+b.  Therefore:

-x+2y=4\\2y=x+4\\\\y=\frac{x+4}{2}\\\\y=\frac{1}{2}x+2

Therefore, our slope is 1/2 and our y-intercept is 2.  Now in order to determine a perpendicular line to the one stated above we must then get the negative inverse of our slope meaning \frac{1}{2}=-2 (negative reciprocal).  Now we must use the point slope formula:

y=m(x-x_1)+y_1

Where m is the slope, x1 is -2 and y1 is 1 (because of the ordered pair given). And so:

y=-2(x-(-2))+1\\\\y=-2(x+2)+1\\\\y=-2x-4+1\\\\y=-2x-3

Therefore, the line that is perpendicular to -x+2y=4 is y=-2x-3.


6 0
3 years ago
There were 65 people waiting in two lines to buy a snowball ice drink they were joined in the line by 11 more people a total of
Pavlova-9 [17]

Answer:

67 people were still left waiting in line.

Step-by-step explanation:

If there are 65 plus 11 more, there'd be 76 people in line.

I guess the fact that it says "waiting in two lines" can be completely discarded because bottom line is 9 people got their drinks- which means that "waiting in two lines" means nothing.

76 - 9 = 67 people still left waiting in line.

8 0
3 years ago
Given f(x)= (4x+1)/3 solve for f^-1(3)
nirvana33 [79]
I hope this helps you

7 0
4 years ago
Read 2 more answers
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