QUESTIONS
INSTRUCTIONS: Answer all questions in the spaces provided
- Simplify (3mks)
- Using mathematical tables, find the value of (3mks)
- 456 × 397
273 - 0.14683+ 1 (2mks)
27.38
- 456 × 397
-
- Determine the gradient and the y-intercept of the following equation (3mks)
1/3 x + 2/5 y+1/6 = 0 - Find an equation perpendicular to the line 2y=3x+4 and passing through point (2, 6) (4mks)
- Determine the gradient and the y-intercept of the following equation (3mks)
- The volume scale factor of two similar cylinders is 27. Find;
- The linear scale factor (2mks)
- The area scale factor (1mk)
- By substitution method, solve the following simultaneous equations
2x + 4y = 16
3x - y = 2 (3mks) - A quadrilateral has vertices P(-3,7), Q(-5,3), R(-3,1), and S(-1,3).
- On the grid provided, draw the quadrilateral and name it (2mks)
- Find the equation of the line of symmetry of the quadrilateral formed in (a) above. (2mks)
- Draw the image of quadrilateral PQRS under a reflection in the line y=x and give the coordinates of the image. (3mks)
- Find the equation of the line of symmetry of the image (2mks)
- On the grid provided, draw the quadrilateral and name it (2mks)
MARKING SCHEME
INSTRUCTIONS: Answer all questions in the spaces provided
- Simplify (3mks)
(a × a × a × a) × ( b × b × b) × (a × a) × (c × c × c × c) × (b-1 × b-1) × (c × c × c)
(a-1 × a-1 × a-1) × (b × b × b) × (c × c × c)
a3× a2× c4× b-2
a-3 - Using mathematical tables, find the value of (3mks)
- 456 × 397
273
No Std form Log 456 4.56 × 102 2.6590 397 3.97 × 102 + 2.5988 - 5.2578 273 2.73 × 102 2.4362 2.8216
0.8216 × 102
Anilog of 0.8216
= 6.63132 × 102
= 663.132 - 0.14683+ 1 (2mks)
27.38
No Std Form Log 0.14683 (1.468 × 10-1)3 3.1635 × 10-3 1/27.38 1/2.738 × 101 1/10 × 0.3655
+ 0.003165
0.039715
= 0.039715
- 456 × 397
-
- Determine the gradient and the y-intercept of the following equation (3mks)
1/3 x + 2/5 y+1/6 = 0
5/2 × 2/5y = -1/6 × 5/2 - 1/3x × 5/2
y = (-1/6 × 5/8) - 1/3x × 5/2
y = 5/48 - 5/6x
Gradient = -5/6 - Find an equation perpendicular to the line 2y=3x+4 and passing through point (2, 6) (4mks)
M1M2 = -1
2y = 3x + 4
2 2 2
y = 3/2x + 2
M1 = 3/2
2/3 × 3/2 × m2 = -1 × 2/3
m2 = -2/3
y - 6 = 2
x - 2 3
3y - 18 = -2x + 4
3y = 2x + 22
3 3 3
y = -2/3x + 22/3
- Determine the gradient and the y-intercept of the following equation (3mks)
- The volume scale factor of two similar cylinders is 27. Find;
- The linear scale factor (2mks)
3√27 = 3
L.S.F = 3 - The area scale factor (1mk)
A.S.F = (L.S.F)2
32 = 9
- The linear scale factor (2mks)
- By substitution method, solve the following simultaneous equations
2x + 4y = 16
3x - y = 2 (3mks)
2x(2x + 4(3x - 2)) = 16
2x + 12x - 18 = 16
14x = 24
14 14
x = 12/7
y = 3x - 2
y = (3 × 12/7) - 2
y = 36/7 - 2/1
y = 36 - 14
7
y = 22/7 - A quadrilateral has vertices P(-3,7), Q(-5,3), R(-3,1), and S(-1,3).
- On the grid provided, draw the quadrilateral and name it (2mks)
kite - Find the equation of the line of symmetry of the quadrilateral formed in (a) above. (2mks)
P(-3,7) and R(-3,1)
therefore gradient = -3 - Draw the image of quadrilateral PQRS under a reflection in the line y=x and give the coordinates of the image. (3mks)
P1 = (7, -3)
Q1 = (3, -5)
R1 = (1, -3)
S1 = (3, -1) - Find the equation of the line of symmetry of the image (2mks)
P(7, -3)
R(1,-3)
Gradient y = -3
- On the grid provided, draw the quadrilateral and name it (2mks)
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