Math, asked by shreya32457, 1 year ago

solve it ....

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Answered by siddhartharao77
8

Answer:

4,3

Step-by-step explanation:

Given, (3, - 1) is the point of intersection of lines ax + by = 9 and bx + ay = 5.

It satisfies both the equations.

(i)

Substitute x = 3 and y = -1 in the equation ax + by = 9, we get

a(3) + b(-1) = 9

3a - b = 9

(ii)

Substitute x = 3 and y = -1 in the equation bx + ay = 5, we get

b(3) + a(-1) = 5

a - 3b = -5

On solving (i) & (ii) * 3, we get

3a - b = 9

3a - 9b = -15

---------------------

      8b = 24

         b = 3.

Substitute b = 3 in (i), we get

3a - b = 9

3a - 3 = 9

3a = 12

a = 4.

∴ a = 4, b = 3.

Hope it helps!

shreya32457: thank u so much sir ...... ^_^
shreya32457: plz.can u solve my other question ....
shreya32457: I've posted
shreya32457: plz
Answered by Siddharta7
0

Given, (3, - 1) is the point of intersection of lines ax + by = 9 and bx + ay = 5.

It satisfies both the equations.

(i)

Substitute x = 3 and y = -1 in the equation ax + by = 9, we get

a(3) + b(-1) = 9

3a - b = 9

(ii)

Substitute x = 3 and y = -1 in the equation bx + ay = 5, we get

b(3) + a(-1) = 5

a - 3b = -5

On solving (i) & (ii) * 3, we get

3a - b = 9

3a - 9b = -15

---------------------

      8b = 24

         b = 3.

Substitute b = 3 in (i), we get

3a - b = 9

3a - 3 = 9

3a = 12

a = 4.

∴ a = 4, b = 3.

Siddharta7: mark as brainliest
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