In a statistics course, a linear regression equation was computed to predict the final exam score from the score on the first test. the equation was y=10+0.9x where 'y' is the final exam score and 'x' is the score on the first exam. eve scored 95 on the first test. on the final exam, eve scored 98. what is the value of her residual? a. -2.5 b. 0 c. 2.5 d. 98 e. none of the above

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:

true

step-by-step explanation: