Sorry forgot to put these 2 in as well-
What is the solution of the system?
5x-y =-7
3x-y=-2
What is the solution of the system?
5x+6y=20
9x+11y=32
How many solutions does the system of equations have?
y=4x+4
y=4x-3
y=-6x-2
y+2=-6x
3 answers
For the first one, just subtract the two equations to get
2x = -5
and go from there
For the 2nd set, multiply them a bit to get
45x+54y = 180
45x+55y = 160
Now subtract to get
y = -20
and go from there
2x = -5
and go from there
For the 2nd set, multiply them a bit to get
45x+54y = 180
45x+55y = 160
Now subtract to get
y = -20
and go from there
Ok thx
1 answer