Answer:
X is in negetive and Y is in positive try it your ans will be correct but i cant fix ok
<h2>
Answer:</h2>
Continuous graph--
- The height of a plant as it grows.
- Amount of fuel and distance traveled.
Discrete graph--
- Number of students per teacher.
- Amount of chairs for each table.
<h2>
Step-by-step explanation:</h2>
In mathematics the word discrete means that it takes distinct values and continuous means that there are infinite value between each value.
1)
- Number of students per teacher.
Here as we know that a whole of a teacher would be assigned for some children this means that it takes a particular value and not all of the values especially the decimal values.
2)
- The height of a plant as it grows.
As we know that the height of a plant grows continuously over a span of time.
Hence, the graph of this situation will be continuous.
3)
- Amount of fuel and distance traveled.
Since, the amount of the fuel required over a distance will be continuous and the fuel used could be in decimals not necessarily in integers.
Hence, we will get a continuous graph for this situation.
4)
- Amount of chairs for each table.
As we know that the amount of chairs are always required as a whole.
Hence, the graph of it will be discrete.
Step-by-step explanation:
x = number of birds
y = number of beasts
x + y = 43 (as each of these creatures had only 1 head).
2x + 4y = 120 (birds have 2 feet, beasts 4 feet).
x + 2y = 60 (divided both sides by 2)
so, second equation minus the first equation is
(x-x) + (2y-y) = 60-43
y = 17
x + y = 43
x + 17 = 43
x = 26
so, there are 17 beasts and 26 birds.