Quadratic function can be in the vertex form which is
or it can be in the standard form which is
. We will just take random form and draw its graph using table of values.
Lets draw graph of
. To draw graph of this function, we need to create table of values. We will take some random values of x, put them in the given function and find corresponding values of y.
Lets take x=0, we get
If we take x=1, we get
If we take x=2, we get
If we take x=-1, we get
If we take x=-2, we get
So our table of values are
Now we can plot these points and have graph of
which will be like
Lets take another random example of quadratic function
and we will draw graph of this function using table of values again.
Lets take x=0, we get
If we take x=1, we get
If we take x=2, we get
If we take x=-1, we get
If we take x=3, we get
Now we can plot the graph using table of values and graph will look like.
Similarly we can graph other functions using same strategy.
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