Answer:
The grade you make on your exam varies directly with the number of correct answers. The constant of variation is 5
Solution:
Given, The grade you make on your exam varies directly with the number of correct answers you get on the exam.
Answering 15 questions correctly will give you a grade of 75 what is the.
We have to find what is the Constant of variation.
Now, according to the given information, grade number of correct answer
Then, grade = c x number of correct answers, where c is constant of variation.
Now, substitute grade = 75 and number of correct answers = 15
[tex]\text { Then, } 75=c \times 15 \rightarrow c=\frac{75}{15}=5[/tex]
Hence, the constant of variation is 5
