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zhannawk [14.2K]
3 years ago
13

The graph of a linear relationship has a slope of -5 and passes through the point (2, -12). Write the equation of the line in sl

ope-intercept form.
Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0
<h3>Answer:</h3>

y=-5x-2

<h3>Solution:</h3>
  • We are given the line's slope and a point that it passes through.
  • Using the given information, we can write the equation of the line in Point-Slope Form:
  • y-y_1=m(x-x_1)
  • In this formula, y₁ stands for the y-coordinate of the point, m stands for the slope of the line, and x₁ stands for the x-coordinate of the point.
  • In this case, y₁ is equal to -12, m is equal to -5, and x₁ is equal to 2.
  • Plug in the values:
  • y-(-12)=-5(x-2)
  • y+12=-5(x-2)
  • Now, convert into Slope-Intercept Form, y=mx+b:
  • y+12=-5x+10
  • y=-5x+10-12
  • y=-5x-2

Hope it helps.

Do comment if you have any query.

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1. Solve and verify each of the following systems of linear equations. SHOW ALL WORK PLEASE AND THANK YOU
storchak [24]

Answer:


Step-by-step explanation:

(a)

Given the system of equation:

5x-2y=-6                .....[1]

2x-y=1                    .....[2]

Multiply equation [2] by -2 we get;

-4x + 2y = -2         ......[3]

Add equation [1] and [3] to eliminate y and solve for x we have;

5x -2y+(-4x+2y) = -6-2

5x -2y-4x+2y= -6-2

Combine like terms;

x = -8

Substitute the value of x in [2] we get;

2(-8)-y =1

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Add 16 both sides we get;

-y = 17

or

y =-17

Answer; Solution for the given system of equation is (-8, -17)

Verify:

Substitute the value of x = -8 and y = -17 in the system of equation;

5x -2y = -6

5(-8)-2(-17) = -6

-40+34 = -6

-6 = -6          True

2x-y =1

2(-8)-(-17) = 1

-16+17 = 1

1 = 1               True.

(b)

Given the system of equation:

2x+3y=432                .....[1]

5x-2y=16                    .....[2]

Multiply equation [2] by 3 and equation [1] by 2 we get;

15x -6y = 48         ......[3]

4x +6y = 864         ......[4]

Add equation [3] and [4] to eliminate y and solve for x we have;

15x -6y+4x+6y =48+864

Combine like terms;

19x = 912

Divide both sides by 19 we get

x = 48

Substitute the value of x in [2] we get;

5(48)-2y=16

240 -2y = 16

Subtract 240 from both sides we get;

-2y =-224

Divide both sides by -2 we get

y =112

Answer: Solution for the given system of equation is (48, 112)

Verify:

Substitute the value of x = 48 and y = 112 in the system of equation;

2x+3y=432  

2(48)+3(112)=432  

96+33+3y=432            

432=432         true

5x-2y=16  

5(48)-2(112)=16  

240-224=16

16 = 16                          true  


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