# How do you find the vertex and intercepts for # y = 3x^2 + 7x – 4#?

##### 1 Answer

Dec 22, 2015

The intercepts are given by attributing zero to one of the variables, while the vertex has its coordinates

#### Explanation:

The intercepts:

- When
#x=0# ,#y=3(0)^2+7(0)-4# , then when#x=0# ,#y=-4#

Thus, the first intercept, which corsses the axle

- When
#y=0# , we must resort to Bhaskara, which will go like this:

Let's approximate

Thus, the intercepts that cross the axis

The vertex has the following formulae:

Vertex's coordinates: