A. the graph represents a relation because it contains ordered pairs (x,y). It is also a function because there are no repeating x values.
B. (0,0) (8,6)
slope = (6 - 0 ) / (8 - 0) = 6/8 = 3/4
so ur equation is : y = 3/4x or f(x) = 3/4x <===
C. the variable x represents the height of the building and the variable y (or f(x)) represents the total length of the shadow
If you plug in the # the only one that is correct is y-8=-0.2(x+10)
Is this the whole question ?
1 75/1000
One and seven thousandth
25x/45=-65
25x=2925
x=117
I wasn't sure if you wanted a solution