Browse · harp
Printsmc
algebra intermediate
Problem
The formula which expresses the relationship between and as shown in the accompanying table is: \begin{array}[t]{|c|c|c|c|c|c|}\hline x&0&1&2&3&4\\\hline y&100&90&70&40&0\\\hline\end{array}
(A)
(B)
(C)
(D)
Solution
Plug in the points and into each equation. The only one that works for both points is Plug in the rest of the points to confirm the answer is indeed .
Final answer
C