Answer:
The inverse is
(x) = 
Step-by-step explanation:
(By the way,
(x) is f negative one of x, like f(x), but inverse)
f(x) =
- 4 is the same as y =
- 4
y =
- 4 start with the equation.
x =
- 4 switch x and y.
x + 4 =
add 4 to both sides.
= y square both sides.
(x) =
change y to the inverse f(x) format.
I hope this helps! :)
Answer:
y = -3x - 2
Step-by-step explanation:
Equation of a line passing through
and slope m is,

Slope of a line passing through
and
is,
Slope = 
Slope of the line passing through (0, -2) and (1, -5) will be,
Slope = 
m = - 3
Therefore, equation of the line passing through (0, -2) and slope = -3 will be,
y + 2 = -3(x - 0)
y + 2 = -3x
y = -3x - 2
Answer:
a. 2.25 km
Step-by-step explanation:
the scale on a map means how many units in the mapp corresponds to how many units in reality.
in this case
1 cm on the map = 75000 cm in reality =
= 75000/100 m = 750 m =
= 750/1000 km = 0.75 km
3 cm = 3×1 cm = 3 × 0.75 km = 2.25 km