For any given graph on a coordinate grid, the coordinates lie on a point denoted as (x, y), that is , where x = ? and y = ?, then you have your point.
The line or the parabola can touch the horizontal axis (x-axis) or the vertical axis (y-axis) depending on the equation.
The intercept(s) is denoted as the value of the graph when it touches either the x-axis or the y-axis.
The y-intercept is the value of the function (graph) when it touches the y-axis. This is derived by looking at the value when x = 0.
From the graph provided here, the parabola touches the y-axis at the point when x = 0, y = -9 (at the bottom)
ANSWER:
The y-intercept is -9