1.

Check whether (4,-2) is a solution of the equation 3x-4y=20.

Answer»

3×4-4×-2=2012+8=2020=20 is the correct answer of the given question

x=4 and y=-23x-4y=203×4-{4×(-2)}=2012-(-8)=2012+8=2020=20.*. (4,-2) are the roots of given eqation

3x - 4y = 20; (4, -2) = 3(4)-4(-2)=20; = 12 + 8 = 20; =20 = 20

correct answer is 20


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