Question 1153102: Mr. Jones determined that the equation y=98-16/5x could be used to predict his students unit test scores, based on the number of days,x,a student was absent during the unit. What is the meaning of the y- intercept of the function?
A. A student who was not absent during the unit should score about 98.
B. A student who was not absent during the unit should score about 94.5.
C. A students test score should score increase by about 3.2 points for each day the student is absent.
D. A student test score should decrease by 3.2 points for each day the student is abs ENT.
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! the formula, as i understand it is:
y = 98 - 16/5x.
i read it to mean:
y = 98 - 16/5 * x
parentheses would have made this more clear.
something like y = 98 - (16/5) * x would do.
if it were 98 - 16 / (5x) then it would be wrong because, when x = 0, the result would be undefined because you can't divide by 0 and get a real number as an answer.
so, .....
i'm assuming you mean y = 98 - 16.5 * x
when x = 0, y = 98.
that's your y intercept because the definition of the y-intercept is the value of y when x = 0.
based on that, your solution should be selection A.
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