Answer:
For a direct variation equation passing through
(
x
,
y
)
=
5
−
6
we have
m
⋅
→
and the direct variation equation is
which you might re-write as
-10
Step-by-step explanation:
4a-2b=10
-1(4a-2b)=-1*10
-4a+2b= - 10
2b - 4a = - 10
(a) $1120 (c) 12.75hrs
Step-by-step explanation: see attachment