Determine which of the points {(1,-2), (-1,2), (1,2), (-1,-2)}, if any are solutions to the systems of equations {x=4/5y-7 {2x+y=-1
Determine which of the points {(1,-2), (-1,2), (1,2), (-1,-2)}, if any are solutions to the systems of equations {x=4/5y-7 {2x+y=-1
I'll test (1,-2) x=1 and y=-2
x=4/5y-7 1=(4/5)*-2 -7 1=-8/5 -7 This is not true so (1,-2) does not satisfy this system of equations.
If it had made the equations true then I would have tested (1,-2) in hte second equation to see if that was true. If they were both true then the point would have satisfied the system of equations. You can check th other points. |
Determine which of the points {(1,-2), (-1,2), (1,2), (-1,-2)}, if any are solutions to the systems of equations {x=4/5y-7 {2x+y=-1
I'll test (1,-2) x=1 and y=-2
x=4/5y-7 1=(4/5)*-2 -7 1=-8/5 -7 This is not true so (1,-2) does not satisfy this system of equations.
If it had made the equations true then I would have tested (1,-2) in hte second equation to see if that was true. If they were both true then the point would have satisfied the system of equations. You can check th other points. |