What do you think the graph ... graph has not moved up or down maximum turning point when \(y = 1\) and minimum turning point when \(y = - 1\) The graph looks like: Now try the example questions ...

All quadratic functions ... then the graph just touches the x-axis without crossing it. If the equation \(ax^2 + bx + c = 0 \) has no solutions then the graph does not cross or touch the x-axis.

If you understand the definition of a mathematical function ... marking points or lines, the graph is spread across the XY-axis. Eg. Let us consider this example of a person’s salary across ...