Which of the following relations is a function?
2 answers:
Answer:
B
Step-by-step explanation:
A is not a function because the same x value is repeated twice with different y values. The same goes for C and D so the answer is C.
Answer:
B.
Step-by-step explanation:
Well a relation is a set of points and a function is a relation where every x value corresponds to only 1 y value.
So lets see which x values in these relations have only 1 y value.
A. Well a isn’t a function because the number 3 which is a x value had two y values which are -1 and 4.
B. This relation is a function because there are no similar x values.
C. This is not a function because the x value 4 has two y values which are 4 and -3.
D. This is not a function because the number 1 has 2 and 3 as y values.
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Answer:
Y=.5x
5$/10cookies
each cookie is .50
Answer:
662
Step-by-step explanation:
l x w
10x41
6x22
8x15
662
Answer:
A = 140
Step-by-step explanation:
Area of a triangle:
A = 1/2bh
Given:
b = 20
h = 14
Work:
A = 1/2bh
A = 1/2(20)(14)
A = 10(14)
A = 140
3x = 4x + 2
-4x -4x
-1x = 2
---- -----
-1 -1
x = -2
Check:
3(-2) = 4(-2) + 2
-6 = -8 + 2
-6 = -6
