Posted by **michele** on Saturday, April 2, 2011 at 10:13am.

If A = {a, b, c, d} and B = {-1, 0, 1} which of the following relations is a function from A to B.

a.(i) {(a, 0), (c, 1), (d, -1)}

b.(ii) {(a, -1), (b, -1), (c, 0), (d, 1)}

c.(iii) {(a, 1), (b, 1), (c, 0), (d, O)}

d.(iv) ({a, 1), (b, 0), (c, -1), (o.O), (a, -1)}

answer choice are

a.(i) and (iv)

b.(i) and (iii)

c.(ii) and Oii)

d.(iii) and (iv)

V

- math -
**bobpursley**, Saturday, April 2, 2011 at 11:24am
i is a one to one mapping, but all do not map. Where does b map to?

ii is a one to one, each abcd maps to a unique map

iii each a,b,c, d maps to a particular choice.

iv how can (a) map to 1 and -1 and be a function? It cant.

so ii, iii are functions. check my logic.

So,

## Answer This Question

## Related Questions

- math - Which of the following relations is not a function? (8, 4), (-5, 2), (4, ...
- VERY URGENT MATH(Formalizing Relations & Functions - What is the domain of the ...
- math - Consider the following 6 relations on the set of real numbers: A) y=2x&#...
- Math - Which of the following relations has this characteristic: The relation is...
- algebra - Which of the following relations is a function? A. {(5, 2), (3, 2), (4...
- Algebra (please help) - Which of the following relations has this characteristic...
- Algebra - Right now we are learning about functions, relations, etc. and I am ...
- Algebra answer for checking - relation or function? x^2 = 1 + y^2 This is a ...
- Mat101 - 5. Which of the following are functions? The last two problems, i.e., b...
- MAT 101 - 5. Which of the following are functions? The last two problems, i.e., ...

More Related Questions