The linear equations are:
- The price of oil from 1990: y = 30 + 5x
- The price of oil from 2005: y = 20 + 2.25x
<h3>How to determine the linear equations</h3>
A linear equation is represented as: y = mx + c
Where:
- m represents the rate
- c represents the initial value.
At the beginning of 1990, we have the following parameters
- Rate: m = 5
- Initial value: c =30
So, the linear equation is:
y = 30 + 5x
At the beginning of 2005, we have the following parameters
- Rate: m = 2.25
- Initial value: c =20
So, the linear equation is:
y = 20 + 2.5x
Hence, the linear equations are y = 30 + 5x and y = 20 + 2.5x
Read more about linear equations at:
brainly.com/question/14323743
The vertex is the point (1,2), but you have to graph it to find out what the vertex is
Keywords:
<em>average rate of change, parabola, interval, points
</em>
For this case we have to find the average rate of change of a parabola in the interval from
to 
. To do this, we need two points for the parabola pass, and apply the following formula:
We have the following points, taking into account that
:
Substituting:
So, the average rate of change for the given graph is 0 in the given interval
Answer:
