Solve each system of equation algebraically 1. y=x+7 y=4
2. y=x+5 y=3x
3. y=x-9 y=-4x
4. x+3y=1 y=2x+5
PLEASE HELP!!

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4