On a number line, what is the difference between -61.5 and -23.4?

-38.1

Step-by-step explanation:

-61.5 - -23.4

OK, without telling the answer yet, I will teach you how to find this. Distance on the number line will always be positive. If you are measuring a line, the distance from two points will always be positive because you cannot have a negative distance. Take each number and find its absolute value. |-61.5|=61.5 and |-23.4|=23.4

Take the larger value and subtract the smaller value to find the distance, and the leftover positive is your answer, which is 38.1

Step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value