# How do you identify the important parts of #y= 2x^2+7x-21# to graph it?

##### 2 Answers

y intercept = -21 ; shape is an upward horse shoe with the minimum at

#### Explanation:

equation standard form is

in this case:

So this an upwards with a minimum y value but goes on increasing from there to infinity.

y intercept at

which is the value of the constant c.

The value of

write

the correction is to compensate for the constant we have introduced. We still have the -21 but we have introduced

Now we look inside the brackets at the

The minimum occurs at

To find

ABR again could not correct my answer. The value of