(1 point) Consider f(x) = x - 2x +3. == Note: Use round parentheses for your intervals (open interval notation). Separate multiple intervals with commas. For example, if the function is increasing between -2 and 0, and then again between 3 and infinity, you should write your answer as (-2,0),(3,infinity). The inflection points for f(x) are (Note: List the coordinate points, with an x and y values. Separate multiple points with commas): The function is concave up in the region The function is concave down in the region Notor Ve