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Alexxx [7]
3 years ago
13

What is the equation of the line that passes through (4, -1) and (-2, 3)?

Mathematics
2 answers:
suter [353]3 years ago
7 0

Answer:

2x+3y-5=0

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(3-(-1))/(-2-4)

m=(3+1)/-6

m=4/-6

simplify

m=-2/3

y-y1=m(x-x1)

y-(-1)=-2/3(x-4)

y+1=-2/3x+8/3

y=-2/3x+8/3-1

y=-2/3x+8/3-3/3

y=-2/3x+5/3

y-(-2/3x)=5/3

y+2/3x=5/3

3(y+2/3x)=3(5/3)

3y+6/3x=15/3

3y+2x=5

2x+3y=5

2x+3y-5=0

8090 [49]3 years ago
3 0

Answer:

2x + 3y - 5 = 0

Step-by-step explanation:

hello :

(4;-1) :   x=4 and y = -1     so : 2(4)+3(-1)-5 = 0    means : 8-3-5 =0...true

(-2;3) :   x=-2 and y = 3     so : 2(-2)+3(3)-5 = 0    means : -4+9-5 =0...true

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X2−10x+29=5
Irina18 [472]

Answer:

(x-6)(x-4) = 0

Step-by-step explanation:

Subtract 5 from both sides to make the equation equal to 0. You will get the equation x2-10x+24=0. Now think of two numbers that multiply to get 24 but add to get -10. These numbers are -6 and -4. The factors of x2 are x and x which multiply to get x2.  Now put two linear factors into parathesis to get (x-6)(x-4) = 0.

7 0
3 years ago
Circle O, with center (x, y) passes through the points A(0, 0), B(-3, 0), and C(1, 2). Find the coordinates of the center of the
KonstantinChe [14]

Answer:

The center of the circle is

(-\frac{3}{2},2)

Step-by-step explanation:

Let the equation of the circle be

x^2+y^2+2ax+2by+c=0, where (-a,-b) is the center of this circle.

The points lying the circle must satisfy the equation of this circle.

A(0,0)

We substitute this point to get;

0^2+0^2+2a(0)+2b(0)+c=0

\implies c=0

B(-3,0)

(-3)^2+0^2+2a(-3)+2b(0)+c=0

\implies 9+0-6a+0+c=0

\implies -6a+c=-9

But c=0

\implies -6a=-9

\implies a=\frac{3}{2}

C(1,2)

1^2+2^2+2a(1)+2b(2)+c=0

1+4+2a+4b+c=0

2a+4b+c=-5

Put the value of 'a' and 'c' to find 'b'

2(\frac{3}{2})+4b+0=-5

3+4b+0=-5

4b=-5-3

4b=-8

b=-2

Hence the center of the circle is

(-\frac{3}{2},2)

8 0
3 years ago
What is the percent of change from 75 to 100
Ann [662]

Answer:

33%

Step-by-step explanation:

4 0
3 years ago
29. Martin has some dollar notes. 20% of the notes are $10 notes, 40% of
Katena32 [7]

Answer:

  • 225 notes

Step-by-step explanation:

Let the number of notes is x.

<u>20% of notes is: </u>

  • 0.2x

<u>40% of the remainder is: </u>

  • 40% of 0.8x, so it is
  • 0.8x*0.4 =
  • 0.32x

<u>Remaining notes are:</u>

  • x - 0.2x - 0.32x =
  • 0.48x

<u>Total of the notes:</u>

  • 0.2x*10 + 0.32x*5 + 0.48x*2 = 1026
  • 2x + 1.6x + 0.96x = 1026
  • 4.56x = 1026
  • x = 1026/4.56
  • x = 225
5 0
2 years ago
Rewrite each linear expression by factoring out the greatest common factor. (please solve each question)
ohaa [14]

Answer:

-5(y + 7).

Step-by-step explanation:

GCF= -5.

7 0
3 years ago
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