How does the function f(x) = a in x compare to the parent function when |a| > 1?

choose the correct answer :

the graph is compressed.

the graph is stretched.

the graph is translated a units to the right.

the graph is translated a units up.

How much is 32 out of 40 written as a percentage? convert fraction (ratio) 32 / 40 answer:   80%

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.