s
l
o
p
e
1
.
5
i
n
t
e
r
c
e
p
t
0
.
2
5
y
0
=
f
(
x
0
)
0
.
2
5
ϵ
>
0
0
.
2
5
δ
>
0
0
.
1
a
m
a
n
d
f
(
a
m
)
1
v
e
r
t
i
c
a
l
a
n
d
h
o
r
i
z
o
n
t
a
l
l
i
n
e
s