Which relation is a function? a) {(2,1),(3,1),(4,1),(5,1)]
b) {(1,2),(1,3),(1,4),(1,5)}
c) {(2,3),(3,2),(4,2),(2,4)}
d) {(1,6),(2,8),(3,9),(3,12)}

b. mark pl pls pls pls

a

Step-by-step explanation:

It is a, because there are no domains (x) that are repeating. If the range (y) repeats, it is okay.

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.