Math

Math

9th Grade

25 Qs

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Math

Math

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

Rolando Marquez

Used 2+ times

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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. An encoder can type n words in t hour. The formula that relates n to t is . What kind of variation is it?

 Inverse

Direct

Joint

Combined

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. Which is an example of a direct linear variation?

xy = 5

y = 3/x

y = 2x

3/y = x

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

  1. Derive the equation for the variation using the table.

y = 3x

y = -3/x

y = -3x

xy = 3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. If p varies directly as q and inversely as r, then which of the following equations describes the relation among the variables?

p = kq/r

1/p = kr/q

p = kr/q

p = k/qr

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Translate into equation, “y is directly proportional to x and inversely proportional to z”. Use k as constant of proportionality.

y = kxz

y = kz/y

y = kx/z

y = x/ky

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to T when h is tripled in the equation T=k/h?

T is tripled

T is multiplied by 6

T is divided by 6

T is divided by 3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

7. If p varies directly as q, and p = 25 when q = 20 find q when p = 140.

4/5

500

112

70

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