Question

Find the solutions of the system y = –2x – 1 and y = 3–x–1. What are the x-coordinates of the solutions? Choose all that apply.
1
0
-1
-2

Answer 1

y=-2x-1....(1)
y=3-x-1
y=2-x ......(2)

Answer 2

i choose the two negative numbers

Answer 3

from eqn (2)
x=2-y ...(3)

substitute eqn (3) in eqn (1) to get y.
&finally x=2-y

Answer 4

so then would it be 1 and -2