you could chose to describe the first graph as any of the following phrases:
‘curved graph’
‘intercept on y-axis’
‘as x increases, y increases’,
‘y increases slowly at first, then more rapidly, then slows down again’ and ‘reaches a maximum level’.
you can chose to describe the second graph as any of the following phrases:
'gradually increases, then rapidly increases in a short period of time"
13-13= 0, 19-13= 6, so then 0-6= -6
Wastewater is water that contains the waste from homes and industries.
<h3>What is wastewater?</h3>
Wastewater refers to water that contains waste products. Waste water can also refer to water that have been used for several purposes and produced as a by-product.
The primary sources of waste water include:
- from homes
- from agricultural and farming activities
- and industries.
Therefore, it can be concluded that waste water is water that contains waste from homes and industries.
Learn more about wastewater at: brainly.com/question/25085634