Answer:
Domain: (-infinity, infinity) Range: (-infinity, infinity)
Step-by-step explanation:
They are parabolas, therefore you can assume that they go on infinitely. To find range, you must look at your y values. Look for your lowest point. Because the line goes done forever, your beginning mark would be (-infinity.
To find the other part, you look at your positive y values. Look for the highest value. Because this goes on infinitely, the completed version of your notation would be (-infinity, infinity). Be sure to use the infinity symbol though, which looks like an 8 rotated 90 degrees.
To find domain, look at your x values. To begin, look at your left-most values, which would be the negative numbers. Because the line goes on forever to the left, your notation would be (-infinity. To find the other part of domain, look at your positive x values. Because this line goes on infinitely as well, the completed version of your notation would be (-infinity, infinity). Infinity is never bracketed, it is always in parenthesis.
For this case we have the following functions:
We must find
. By definition of compound functions we have to:
So:
Taking into account that:
Different signs are subtracted and the major sign is placed.
Finally we have to:
Answer:
Answer:
Yoshi: 80%
student: 20%
Step-by-step explanation:
Mr. Yoshi grades 60/75 papers which simplifies to
80/100, or 80%
The student teacher grades 15/75 papers which simplifies to
20/100, or 20%
1. y= -1/2x + 5/2
2.y= 2x-15
