Consider this system of equations.

-20y + 42x = 28
20y - 42x = -28

Would this be infinite solutions or no solutions?

Question

Consider this system of equations. 

-20y + 42x = 28
20y - 42x = -28
 
Would this be infinite solutions or no solutions?

calculusxy · Answer

@Nnesha

trojanpoem · Answer

Infinite

nnesha · Answer

try to solve the equations 
solve for x and y

if you get x=something ,, y=something then there is a solution 
if you get equal sides at the end then infinite many solution 
something like 2=3 would be no solution bec both sides aren't equal

trojanpoem · Answer

This equations are the same with scalar ( -1 )

trojanpoem · Answer

As Nnesha said or you could use matrix rank for more complex equations

calculusxy · Answer

I would get 0y + 0x = 0.

nnesha · Answer

okay 0 times y = ?
0 times x=?

calculusxy · Answer

both of them would equal to 0 ?

nnesha · Answer

yes right |dw:1452353154071:dw|