Question

solve graphically the pair of linear equation 3x-4y +3= 0 and 3x+ 4y -21 = 0 .verify result by elimination method ​

Answer 1

Answer:

3x - 4y = -3 ------> 1

3x + 4y = 21 ------> 2

solving 1 & 2

3x - 4y = -3

3x + 4y = 21

- - -

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- 8y = - 24

y = - 24/-8

y = 3

substitute the value of y=3 in equation 2

3x + 4y = 21

3x + 4(3) = 21

3x + 12 = 21

3x = 21 - 12

3x = 9

x = 9/3

x = 3

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Answer 2

Answer:

so this is your answer

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