Question

SOLVE SYSTEMS OF EQUATIONS BY USING SUBSTITUTION METHOED:
-X+Y=5
Y=-3X+1
HELPPP

Answer 1

With this on the second equation has y isolated so substitute for y in the first equation.
-X +(-3X+1) = 5
-X -3X +1 =5
-4X = 5 - 1
-4x = 4
x=-1
Now substitute the value of X into the first equation
-(-1) + Y = 5
1 + Y = 5
Y =5 -1= 4
Y = 4

Answer 2

thank you soooo much