The first statement is true, because the two negative signs cancel each other out. However, the second is false because any time you multiply a positive number by a negative number the product is always negative. Therefore 4x-6=-24
Explanation:
Note that
d
d
x
(
arccos
(
x
)
)
=
−
1
√
1
−
x
2
.
Then, by the chain rule
d
d
x
(
arccos
(
4
x
2
)
)
=
2
⋅
(
arccos
(
4
x
2
)
)
⋅
d
d
x
(
arccos
(
4
x
2
)
)
.
Then, by the chain rule again,
d
d
x
(
arccos
(
4
x
2
)
)
=
−
1
√
1
−
16
x
4
⋅
d
d
x
(
4
x
2
)
,
d
d
x
(
arccos
(
4
x
2
)
)
=
−
8
x
√
1
−
16
x
4
.
Substituting,
d
d
x
(
arccos
(
4
x
2
)
)
=
−
16
x
⋅
arccos
(
4
x
2
)
√
1
−
16
x
4
.
440 cubits to feet would be 660ft. Have a good day!
In the slope intercept formula (y = mx + b)
the m = slope
the b = y intercept
hope this helps :)
you have to rearrange the equation to match the formula
so.....
-y = 6x - 6
m = 6x/-y = -6 (you can just see it as 6/-1 you dont have to count the x and y)
b = -6