A mapping is said to be function if each element in the domain is related with only one element in the range.Or you can say that a relation is a function also when two different elements in domain have same image or related with same element of the Co domain.
The elements which is related with elements of domain is called Co domain.
So , using the definition of function that i have written above you can classify that the relation is a function or not
1. {(2, 2),(4, 4),(6, 6),(8, 8)}
→→Each element is related with itself , no two different images have different Preimage, For example (2,3),(2,4) that is not happening in this case. so this relation is a function.This kind of function is called identity function.
2. (0, 3),(3, 5),(5, 6),(8, 4)→Different element have different images .So this Relation is a function.
3. (1, 2),(3, 3),(4, 8),(6, 3) →→→Here two elements have same image 3. But still this is a function because two elements in domain or preimage can have same image in a function.
4. (3, 4),(5, 2),(5, 6),(7, 3)→→→This is not a function because two different elements of image have same preimage that is image of 2,and 6 have same preimage which is 5. So this is not a function.
From The given options 1,2,3 are functions.
sentences
15 years
18 years
x - 15 = 3(x + 5)
x+15= 3(x - 5)
The equation representing William's claim is
William's present age is
Answer:
x+15=3(x-5) his present ae is 15 years
Step-by-step explanation:
x+15=3(x-5)
x+15=3x-15
15+15=3x-x
30=2x
x=30/2=15 years
Step-by-step explanation:
omg its 13
The model of the shaded region is 0.80. And if 8 square boxes were shaded, then Koran's model was right.
A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.
Given:
Koran showed 0.08 with the model.
In the model,
there are ten columns and ten rows.
That means, 100 square boxes.
And the shaded region have 8 columns and 10 rows.
That means, 80 square boxes.
Koran showed the percentage of shaded region of the model.
That is, 0.08 is 8%.
So let n be the percentage of shaded region.
So, 80 =n x 100/ 100
n = 80%
And 80% in decimal is 0.80.
And if Koran wants 0.08.
That means, 8% of shaded region.
So 8% 0f 100 is 8 square boxes.
Therefore, if 8 square boxes were shaded, then Koran's model was right.
To learn more about the percentage;
#SPJ2
X=Less than 5 weeks
Y=Less than 200
- Use substitution instead of graphing.
Answer:
all work is pictured and shown
Answer:
(6,3) and (2,2)
Step-by-step explanation:
y - y1 = m(x-x1)
y - 3 = 1/4(x - 6)
y = (1/4)x + 3/2
y intercept is 3/2 and slope is 1/4