How many pairs of (x,y) satisfy the equations 3x+6y=21 and 4x+8y=16
as 3/4=6/8 so these lines are parallel, i.e. have no common point, so 0 pairs of (x,y) will satisfy this
3x + 6y = 21
Inconsistent equations. No solution.
these two equations reaemble two parallel lines as a1/a2=b1/b2not equal to c1/c2.
so these two lines never intersect and thus have no solution
no solution since they are parallel linesplease post some tough questions next time:)