122k views
5 votes
PLEASE HELP Which of the following functions is graphed below??

PLEASE HELP Which of the following functions is graphed below??-example-1
User Ssrp
by
8.3k points

2 Answers

6 votes
The graph is

y = { \{x}^(2) + 2 \: . \: x \leqslant 1 \\ { \{ - x} + 2 \: . \: x > 1
Sorry - I'm not really sure how to format the function properly, the '.' stands for a comma
User Potheek
by
8.7k points
3 votes

Answer:


y=\left \{ {{x^2+2,\:x\:<\:1} \atop {-x+2,\:x\ge1}} \right.

Explanation:

The graph is a piece-wise function.

It is made up of a quadratic function and a linear function.

The quadratic function is
y=x^2+2 and the linear function is
y=-x+2.


The graph of the quadratic function is defined on the interval
x\:<\:1 and the graph of the linear function is defined on the interval
x\ge 1.


So in short, if
\:x\:<\:1, then
y=x^2+2, else,
y=-x+2.


Writing these two functions as a single piece-wise function gives,


y=\left \{ {{x^2+2,\:x\:<\:1} \atop {-x+2,\:x\ge1}} \right.


The correct answer is C.

User Lapurita
by
8.4k points

No related questions found