Answer:
z = -1
Step-by-step explanation:
7 - z / -2 - (-1)
7 - z / -2+1
7 - z / -1
-7 +z = -8
to check the work
(-1,-1) (-2,7)
7 + 1 / -2 + 1
8 / -1
= -8
7.0909090909 hope this helps!!
\left(\mathrm{Decimal:\quad }x=-0.75\right)
hope it helps :P