九年级(初三)数学下册期末测试题（9th grade (grade three) in the final exam of mathematics）.doc

九年级(初三)数学下册期末测试题（9th grade (grade three) in the final exam of mathematics） - 1 - - grade 1 - grade 9 Ninth grade Ninth grade, (( (grade The third grade 3) )) Part ii) Part ii book1book 2 Final survey The final exam is final The final test Have a try Test questions Topic title The topic ( (( (the three Three three 3) )) ) a One by one A, ,,, Multiple choice, Choose the topic choice Choice ( (( (total A total of a total of A total of eight 88 Item 8 road, Its a small problem The item, ,, Each item, Every little problem Each item 4 44 Four points hoping Points, ,, , a total of A total of a total of A total of 32 3232 32 points hoping Points) )) ) 1. If the equation x2 minus 5x = 0 is a root A, the value of a2 minus 5a plus 2 is () A. -2 B. 0 c.2 d. 4 2. The radius of O is equal to 5, the radius OC is perpendicular to the string AB, and the vertical foot is D, if OD = 3, the length of string AB is (). A.10b.8 c.6 d.4 How do you get a parabola by translating the paraboloid y = 2x2 Y is equal to 2 times x plus 3, 2 plus 4, right? (a) A. Shift 3 to the left and 4 to the left B. Shift 3 to the left, 4 more units down C. Shift 3 to the right and 4 to the right D. Shift 3 to the right and 4 to the right 4. Small li stood far from the tree horizontal distance is a m, press with a right-angle triangle containing 30 ° as shown The height of the tree was measured, and she knew that Lizs eyes were 1.5 meters above the ground The height of a tree is () arjun ) 3 3 (a B.m 3 (a) c. ) 3 3 5.1 (a + D.m) 35.1 (a + 5. As shown in the picture, at a certain point as center, delta AOB is going to have a change of potential delta CDE, remember delta AOB and delta CDE The ratio of the edge to the other is k, and the coordinate of the center is similar to that of the center The value of k is () -2 - -2 A. (0, 0), 2 b.2 one ), (2, 2 C. (2, 2), 2 D. (2, 2), 3 6. Parabola y = X2 + 1 around the origin O turn 180 °, the family is the parabola of turn after the parsing is: () A.y = - X2, which is eq