Question

Choose the ordered pair that is the solution to the system of equations.
x + y = 4
y = 2x + 1

Answer 1

x+y=4 ...........eq1
y=2x+1.............eq2
now put eq2 into eq1
x+2x+1 =4
3x=4-1
3x=3
x=1
put x=1 into eq2
y=2(1)+1
y=3


solution set:- (1,3)
this is the correct answer