Is this a function? if so, write function in function notation.  (0,-7), (1,-4), (2,-1), (-1,-10) is this a function? yes or no? if yes, write the equation.

Well, for a function, in a set of x,y ordered pairs, so long the "x" are not repeated, then it IS a function, let's look



so then, let's use two of those points ahemm let's see say (0, -7) and (2, -1)

so, what's the equation of a line that goes through  (0, -7) and (2, -1)?

X= 2 he can buy 2 packs of cards for $12 and an action figure for $3 so he would spend $15 in total plus the free poster