I need help on these

12

Step-by-step explanation:

This is a "absolute value"

We use this to make a number or the result of an equation positive.

Example: |2 - 8| = |-6| = 6

You solve the equation first and then turn it positive, if the number is positive, just remains de same.

In your case, it is just a negative number, you just have to turn it positive.

|-12| = 12

It is simple.

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.