Well, yes and no.
Yes, because the straight line needs to pass through a number greater than 0, and 1 is obviously greater than 0.
However, y = x + 1 is not the same as y = x.
hope this helps.! let me know if it's in any way confusing..
I'd be happy to help!
For this case we can make use of the following rule of three:
42 -----------------------> 21%
x -------------------------> 100%
In this case we have the following variable
x: unknown number whose 21% is equal to 42-
From the rule of three we clear x.
We have then:
Answer:
42 is 21% of 200
(1, -2)
(1, 4)
p(x)=x-4