国际学校八年级数学测试卷英文版(代数)

1、Chapter Two Examination PaperName:Score:Is Please choose the correct one(20J).l)Choose the correct solution that best describes the graph(681012(A)X<-2(B)X>-22)Solve: 3(2 + m) > 15().(A)m>5(B)m>3(C)X<-2(D)X>-2(D) m<33)Which one isthe solution of <x+1 WO, 2x + 3<5(_-I 1

2、X(A)-11 x(B)4)lf a,b are negative numbers,and a V,so(A)y>lhn-i (C).(C)- aJ -11 x(D)1<-h(D)ab<l5)ln the following notation intervals ,which one is greater than or equal to 5().(A)(5,+8)6)How many integers in.(A)l(B)(-8,5)3x + l>0(2x<5(B)2(C)5,+ oo)(C)3(D)(-8 (D)47)ldentify the type of

3、interval (0,2(A)Left-open, right-closed(B)Open(C)Closed(D)Left-closed, right-open8)The set given in set builder notation as 3<X< 7 can also be expressed as which of thefollowing( ).(A) (-3,7)(B)3,7(D)-3,7)9)Which of the following represents a closed interval( ).(A) -5,4(C)7J2)(D)(F210)lf c/>

4、;>which one is wrong ().(O)a2>b2(B)a(in2 +)>b(in2 +1)(C)- <-222、Express each of the following intervals in set-builder notation (8').(2,8) 5,0)(3,8)(- 8,-43、 Solve the compound inequalities(8,).A) 3y 5>4 or4-y <6B) 5x+2 > -8 and - 4x>- 244、Write the following inequalities

5、 in interval notation and graph it(16,).1)x34)x>-46、Riot on the number line: -2, 3) A Z; i.e., "The intersection of -2, 3) with the set of integers.w (7)7、Express these meanings of the following maths signs in English，).7、Arrange from least to greatest: | -|, | - 3 |, 3,-4|f -4. Use the symbols “ < " and“ < ”(6)8、Solve each inequality and graph its solution（16'）.|8 + 9x| >53|7 + 8.v| >-898|-2v| -2>303 + 2|9 + n| 4-19、 Solving the following inequalities and expressing the interval