Please help
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4th answer is correct

Step-by-step explanation:

The formula to find the slope of a line is :

m =

In the question, they have given 2 coordinates of the line.

They are,

( -2 , - 9 ) ⇒ ( x₁ , y₁ )

( -1 , -3 ) ⇒ ( x₂ , y₂ )

Let us solve now.

m =

m =

m =

m =

m = 6

Hope this helps you :-)

Let me know if you have any other questions :-)

We know that,

Subsitute the required values, we get

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

step-by-step explanation: