For a relation to be function, every x value should have its unique image in co-domain. If x is related to more than one y value, then that relation is not a function
In 1, as you can see, 1 related to -7 as well as 8. Which means 1 has two images viz. -7 and 8. But for a relation to be function, x should have only one image. Thus, it is not a function.
The worst is the 4th one in which -2 has 4 images.
Therefore, only relation B is a function.
Answer:
x°=180-45-60=75°is your answer
The answer is 50 because 5 times 10 is 50
Answer:
the rational numbers are _ A, F, D,and B
Multiply 1.75 by 6 to get your answer.
1.75x6=10.5
That means he needs 10.5 feet