Question

Which of the following ordered pairs is a solution to the system of linear equations below?
{2x+y=2 x-4y=10}


a- (2,-2)
b-(0,1)
c-(2 4/7, -3 1/7)
d-(-2,6)

Answer 1

ok solve equation 1 for y
\[\Large y=2-2x\]
put in the second equation
\[\Large x-4(2-2x)=10\]
simplify
\[\Large x-8+8x=10\]
solve this for x then put this value in any of the given equations to find y

can you do this ?

Answer 2

@coolkid2016