Just by looking at y = -x 2 + 1, how do you know that it does not represent a line?
x is squared.
There is no constant term.
There is an increase of 1.
Reactiva
The coefficient is - 1.

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?