What represents the reference point on a graph of motion?

1- identificar select the category that corresponds to each term. january 23 11: 59 pm unlimited attempts remaining grade settings 276-279 vocabulary list modelo fiesta quinceañera casada adolescencia viudo juventud navidad niñez vejez aniversario de bodas divorciado madurez cumpleaños soltera

Me asap! what is the slope of this line? enter your answer in the box.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.