Question

2x-3y=-1 Y=x-1 solve by substitution help ASAP

Answer 1

y = x - 1
now sub x - 1 in for y in the other equation
2x - 3y = -1
2x - 3(x - 1) = -1
2x - 3x + 3 = -1
2x - 3x = -1 - 3
-x = -4
x = 4
now sub 4 in for x in either equation to find y
y = x - 1
y = 4 - 1
y = 3

check...
2x - 3y = -1
2(4) - 3(3) = -1
8 - 9 = -1
-1 = -1 (correct)

x = 4 and y = 3