Answer:
Perpendicular.
Step-by-step explanation:
Since x is postive in one equation and negative in the other, it is an indicator that both x's go in different directions.
Here it is graphed:
x = 5.
I attached an image of my work!
Step 1: Subtract 8 from both sides
4x = 20
Step 2: Divide each side by 4
x = 5
The mean absolute deviation of a set of data is the average distance between each data value and the mean.
The mean is (20+25+30+30+45)÷5=30
( |20-30|+|25-30|+|30-30|+|30-30|+|45-30| )÷5=6
The mean absolute deviation is 6.
Answer:
f^(-1)(x) = 4x + 48.
Step-by-step explanation:
Is suppose the function is f(x) = 1/4 x - 12
This is equivalent to the line y = 1/4 x - 12.
To get the inverse, change the x and y:
x = 1/4 y - 12
Now solve for y:
x + 12 = 1/4 y
y = 4x + 48
So the inverse f^(-1)(x) = 4x + 48.