Question

does the equation $x^2 + y = 141$ define $y$ as a function of $x$?
\bigcirc yes
\bigcirc no
question help: \videoicon video \messageicon message instructor

Explanation:

Step1: Rearrange for y

$y = 141 - x^2$

Step2: Check single y per x

For every $x$, only one $y$ exists.

Answer:

yes