The constant shelling did not bother him as much as the loss of his food. As the siege wore on, fewer and fewer horses, mules, and dogs were seen wandering about Vicksburg. Shoe leather became a last resort of sustenance for many adults.
If the graph of a quadratic function has two x-intercepts, then the line of symmetry is the vertical line through the midpoint of the x-intercepts. The x-intercepts of the graph above are at -5 and 3. The line of symmetry goes through -1, which is the average of -5 and 3. (-5 + 3)/2 = -2/2 = -1.
The graph of any quadratic equation is a parabola. A parabola will look like either a right-side-up U'': or an upside-down U.''. The places the parabola crosses the x-axis are called the x-intercepts, just like with linear equations.ince not all quadratic equations have solutions, the graph might not have any x-intercepts. It could look like this, for example: The y-intercept is the value we get when we plug x = 0 in to the equation ax 2 + bx + c. When we do that, we find. a (0) 2 + b (0) + c = c.