math

the table below shows some values for the function f. if f is a linear function, what is the value of a+b?
table:
X | f(x)
0 | a
1 | 12
2 | b

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  1. since the function is linear, the slope must be constant for any pair

    so (12-a)/(1-0) = (b-12)/(2-1)

    12-a = b-12
    24 = a+b

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