First, multiple choice questions
1, the arithmetic square root of a number is 9, and this number is (
)
(A) 8 1
(B) 8 1
(C) 3
(D) 3
2, the following car logo, belongs to the central symmetric graphics but not axisymmetric graphics have (
) one.
(A)2
(B)3
4 people
(D)5
3. If the average of data 1, 2,2 and x is the same as the mode, then x is equal to (
) .
1
(B)2
(C)3
(D)4
Xiao Ming puts the following four cards.
Three of them are rotated 180.
, what didn't move the card is (
)。
(A)2
four
(C)6
(D)8
5. Quadrilateral ABCD, only choose the combination of the following two conditions to make ABCD a parallelogram. A * * *, how many different combinations are there? (
)
AB‖CD
BC ‖ AD
AB=CD
BC = A.D.
(a) Group II
(b) Group III
Fourth groups
(d) Group 6
6. The linear function y=kx+b satisfies that (1)y decreases with the increase of x (2) its image intersects the negative semi-axis of the y axis, and its function expression may be (
)
(A)y=2x+3 (B)y=x-2
y=- x+4
(D)y=-3x- 1
7, any triangle, any quadrilateral, any pentagon, any hexagon can be dense graphics is (
)。
(a) any triangle or quadrilateral
(b) any pentagon or hexagon
(c) any triangle or hexagon
(d) any quadrangle or hexagon.
8. It is known that the Yangtze River is 836 km longer than the Yellow River, and the length of the Yellow River is 6 times longer than the Yangtze River, 1284 km. Let the lengths of the Yangtze River and the Yellow River be x km and y km respectively, then the following equation is correct (
)。
(1)
x-y=836
(B) x-y=836
5x-6y = 1284 6y-5x = 1284
(3)
y-x= 836
y-x= 836
6y-5x= 1284
5x-6y= 1284
Second, fill in the blanks:
The square roots of 9 and 4 are
.
10，x
.
Math test paper of junior two
First, multiple choice questions
1, the arithmetic square root of a number is 9, and this number is (
)
(A) 8 1
(B) 8 1
(C) 3
(D) 3
2, the following car logo, belongs to the central symmetric graphics but not axisymmetric graphics have (
) one.
(A)2
(B)3
4 people
(D)5
3. If the average of data 1, 2,2 and x is the same as the mode, then x is equal to (
) .
1
(B)2
(C)3
(D)4
Xiao Ming puts the following four cards.
Three of them are rotated 180.
, what didn't move the card is (
)。
(A)2
four
(C)6
(D)8
5. Quadrilateral ABCD, only choose the combination of the following two conditions to make ABCD a parallelogram. A * * *, how many different combinations are there? (
)
AB‖CD
BC ‖ AD
AB=CD
BC = A.D.
(a) Group II
(b) Group III
Fourth groups
(d) Group 6
6. The linear function y=kx+b satisfies that (1)y decreases with the increase of x (2) its image intersects the negative semi-axis of the y axis, and its function expression may be (
)
(A)y=2x+3 (B)y=x-2
y=- x+4
(D)y=-3x- 1
7, any triangle, any quadrilateral, any pentagon, any hexagon can be dense graphics is (
)。
(a) any triangle or quadrilateral
(b) any pentagon or hexagon
(c) any triangle or hexagon
(d) any quadrangle or hexagon.
8. It is known that the Yangtze River is 836 km longer than the Yellow River, and the length of the Yellow River is 6 times longer than the Yangtze River, 1284 km. Let the lengths of the Yangtze River and the Yellow River be x km and y km respectively, then the following equation is correct (
)。
(1)
x-y=836
(B) x-y=836
5x-6y = 1284 6y-5x = 1284
(3)
y-x= 836
y-x= 836
6y-5x= 1284
5x-6y= 1284
Second, fill in the blanks:
The square roots of 9 and 4 are
.
10，x
.
1 1, each outer angle of a polygon is 36, then it is
Edge shape.
12, Rt△ABC gets Rt△DEF by translation, where ∠ c = ∠ f = 90, known AC=5, BC= 12, then DE=
.
13. In ABCD, if ∠ A+∠ C = 20, ∠B=
.
14. It is known that the side length of a diamond is 5cm, one diagonal length is 6cm, and the other diagonal length is
The area of the diamond is
.
15, when
The rectangular ABCD becomes a square. (Fill in a condition).
16, a (-3,4) and point b (a, b) are symmetrical about y axis, then a=
，b=
.
17, the function y = x- 1 must not pass the first one.
Quadrant, the area surrounded by function image and coordinate axis is
.
18. Observe the chart and fill in the appropriate values in ():
Third, answer questions:
19, calculation: (1) 2+- 15.
(2)( -2)(2+ )
20. if y-2x+(x+y-3) 2 = 0, find the value of y-X. ..
Images of 2 1, proportional function y= kx, and linear function y=x+b all pass through points (1, -3) and (1). Find the expressions of these two functions. (2) Draw their images in the same plane rectangular coordinate system. (3) Try to write an equation set, so that the solution of this equation set is the intersection coordinates of the above two function images.