How can you determine the domain and range of a function?

Hello!

If given a graph, you look for the point furthest to the left, and the point furthest to the right. For range you do up and down.

If you are just given a function, you can think of a few things. If you are given a radical, it must not contain a negative number. Therefore, the domain and range for that function would not contain any negative numbers; they would be greater than or equal to 0.

Also, if you have a function that involves division, you cannot divide by 0 as it is undefined. Therefore, the domain could be any real number except for 0, or a certain number that would keep any other numbers in the dividend from becoming 0.

I hope this helps!

the equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -