This is the first quadrant graph of an even function. On a coordinate plane, a function has four connecting parts. The first part is a curve facing up that goes from (0, 0) to (2.5, 9). The second part is a straight line with negative slope from (2.5, 9) to (7, 7). The third part is a straight and horizontal line from (7, 7) to (9, 7). The fourth part is a curve facing down that goes from (9, 7) through (12, 4).
The function is
✔ constant
for –9 < x < –7.
The function is increasing for
.
The point
lies on the graph of the function.