Which is the correct input-output table for the function f(x) = 7 – 4.5x? A. Input (x) 1 3 4 6 10 Output f(x) 3.5 -3.5 -10 -18 -40 B. Input (x) 1 3 4 6 10 Output f(x) 2.5 -6.5 -11 -20 -38 C. Input (x) 1 3 4 6 10 Output f(x) 2 -4.5 -13 -21 -45 D. Input (x) 1 3 4 6 10 Output f(x) 1.5 -7.5 -12 -19 -42 E. Input (x) 1 3 4 6 10 Output f(x) 4 6.5 -10.5 -20 -37

y = x + 95

y = 42 + 95

y=137 mm hg

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

ab will be equal to