Câu hỏi về phương trình

Câu hỏi về phương trình

9th Grade

10 Qs

quiz-placeholder

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Câu hỏi về phương trình

Câu hỏi về phương trình

Assessment

Quiz

Physics

9th Grade

Hard

Created by

phung mai

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nhn bit:T`ím nghim ca phng tr`ín h 2x+ 3y= 6 khix= 1.

y= 2

y= 3

y= 4

y= 5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nhn bit:ˆau l`a dng chun ca phng tr`ín h bc nht hai n?

Ax+By=C

Ax^2+By^2=C

Axy+B=C

Ax+By=Cy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Thˆong hiu:Nu phng tr`ín 3x−2y= 7 c ́o nghim (x0, y0), th`ı nghim (2x0,2y0) ca phng tr`ín n`ao sau ˆay?

6x−4y= 14

3x−2y= 14

6x−2y= 7

3x−4y= 7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Thˆong hiu:Gii phng tr`ín 4x−5y=−2 v`a t`ím gi ́a tr caykhix= 1.

y=−2

y= 2

y= 0

y=−1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vn dng:T`ím tt c ́ac gi ́a tr caksao cho phng tr`ín 2x+ky= 4 c ́o nghim (3,−1).

k=−10

k= 10

k=−2

k= 2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vn dng:Gii h phng tr`ín: (x+y= 5, 2x−y= 1)

(x, y) = (2,3)

(x, y) = (3,2)

(x, y) = (4,1)

(x, y) = (1,4)

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vn dng cao:T`ím c ́ac gi ́a tr caav`absao cho h phng tr`ính sau c ́o nghim duy nht: (ax+by= 6, 2x−3y= 4)

a= 2, b= 1

a= 3, b=−2

a=−1, b= 2

a= 4, b= 3

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