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Semmy [17]
3 years ago
7

Solve the following system using the elimination method. 3x+2y=1 2x-y=10

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Answer:

Step 1 : Multiple both sides by 2

3x + 2y = 1

4x - 2y = 20

Step 2 : Eliminate 1 variable by adding the equations

7x = 21

Step 3 : Divide both sides by 7 to solve for x

x = 3

Step 4: Substitute the value of x into 3x + 2y = 1

3(3) + 2y = 1

Step 5: Solve for y

2y = 1 - 9

2y = -8

*divide by 2

y = - 4

Solution:

(x,y) = (3, -4)

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Answer:

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Step-by-step explanation:

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3 years ago
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irinina [24]

Answer: option B is correct.

Step-by-step explanation:

The equation of a straight line can be represented in the slope-intercept form, y = mx + c

Where c = intercept

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis represent

change in the value of y = y2 - y1

Change in value of x = x2 -x1

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

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y2 = - 1

y1 = - 2

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To determine the intercept, we would substitute x = 3, y = - 1 and

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c = - 1 - 3/8 = - 11/8

The equation becomes

y = x/8 - 11/8

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Step-by-step explanation:

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