Short Quiz in Math 9 solves problems involving variation

QuizÂ by Quizalize Premium (Philippines)

Grade 9

Mathematics

Philippines Curriculum: Grades 1-10

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### Measures 1 skill fromGrade 9MathematicsPhilippines Curriculum: Grades 1-10

Measures 1 skill from

Grade 9

Mathematics

Philippines Curriculum: Grades 1-10

M9AL-IIb-c-1

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5 questions

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- Q1If y is directly proportional to x and y=15 when x=12, what is the value of y when x=16?20.012.816.413.030sM9AL-IIb-c-1
- Q2If n is inversely proportional to the square of p and n=10 when p=2, what is the value of n when p=4?10202.5530sM9AL-IIb-c-1
- Q3The distance a car travels (d) varies directly with the speed of the car (r). If m is the constant of proportionality, which formula could represent this relationship?d = mrr = mdd = m/rr = m2/d30sM9AL-IIb-c-1
- Q4The time required to complete a job varies inversely with the number of people working. If it took 5 painters 3 days to paint a house, how long would it take 1 painter?15 days3/5 day8 days5/3 day30sM9AL-IIb-c-1
- Q5Suppose c varies jointly with a and b. If c=25 when a=2 and b=2.5, what is the value of b when c=40 and a=6?20/3564/330sM9AL-IIb-c-1