Graphs of Quadratic functions
L.O-To be able to draw graphs of quadratic functions using tables of values
and being able to solve quadratic equation using graphs.
A quadratic graph has an x2 term in its equation. For example y= x2 and
y= x2 +6x-4 are both quadratic functions. These graphs always have the same
characteristic shape called a parabola. Quadratic graphs are drawn from
tables of values as shown below;
We can use quadratic graphs to solve various equations.
1. Use the graph of y=3x2 +x+2 to find the x values when y is 16.
- The graph y=3x2 +x+2 is drawn using a table of values. The table
- of values shown above was used to construct this graph. The graph
- is also shown above.