Answer:

Step-by-step explanation:

Factorise 

cancels 2a - 7



"a" cancels "a"

Thus,
= 
Answer:
The frequency is how many times you plot it so if for example 4.5 then you would plot 3 dots on top of the 4.5. Makes sense? I hope this helped!
Step-by-step explanation:
The function is defined for all values of x. The domain is ...
... all real numbers.
Answer:
y=2x
Step-by-step explanation:
it is a proportional relationship and the slope is 2