Find the largest open interval where the function is changing as requested.
-Increasing y = 7x - 5
A) $( - \infty , \infty )$
B) $( - 5 , \infty )$
C) $( - 5,7 )$
D) $( - \infty , 7 )$

Question

Find the largest open interval where the function is changing as requested.
-Increasing y = 7x - 5 
A) $( - \infty , \infty )$
B) $( - 5 , \infty )$
C) $( - 5,7 )$
D) $( - \infty , 7 )$

Quizplus · Accepted Answer

Since the function is a polynomial of degree 1 (i.e. a straight line), it will be continuously increasing for all values of $x$. Therefore, the largest open interval where the function is changing (i.e. increasing) is $(-\infty,\infty)$.

Find the Largest Open Interval Where the Function Is Changing (−∞,∞)( - \infty , \infty )(−∞,∞)

Find the Largest Open Interval Where the Function Is Changing $( - \infty , \infty )$