Answer:
y = x^2 - 1
Explanation:
By using the words "y is equal to" I know that it will start with a y equal ( y = ).
Next, it said "to one less than." That means it's -1 of something. Secondly, it states "the square of x" meaning x would be squared ( x^2). Lastly, when it comes together it looks like this "y = x^2 - 1."