Question

How do you find the domain and range and is it a function given points {(1,−2),(1,4),(1,−6),(1,0)}?

Answer 1

A. B

(1,-2) (1,4)

AB= √(x²-x¹)² + (y²-y¹)²

= √(1-1)²+(-2-4)²

= √(0)²+(2)²

= √4 unit

B. C

(1,4). (1,-6)

BC= √(x²-x¹)²+(y²-y¹)²

= √(1-1)²+(4-6)²

= √(0)+(2)²

= √4unit

C. D

(1,-6). (1,0)

CD=√(x²-x¹)²+(y²-y¹)²

= √(1-1)²+(-6-0)²

= √(0)²+(6)²

= √12 units

D. A

(1,0). (1,-2)

AD=√(x²-x¹)²+(y²-y¹)²

= √(1-1)²+(0-(-2)²

= √0+(2)²

=√4units