Mental Arithmetic Questions Worksheets - Level 6 Page 6
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21Equations
Some points/coordinates on line A are (0,10);
Sheep and Lambs
(4,10); (8,10) y coordinate stays the same.
These straight line graphs all pass through
the point (10,10)
On a farm 80 sheep gave birth.
y
30% of the sheep gave birth to two lambs.
1 2
This question is about graphs
A
The rest of the sheep gave birth to just one lamb.
1 0
Y = m x + c
This is the y
intercept, the
In total, how many lambs were born?
8
point at which
the straight line
Show your working.
6
B
GRADIENT
meets the y axis
E
4
D
70%
C
1 Lamb
2
30%
2 Lambs
Some points/coordinates on line E are
0
x
– 4
– 2
0
2
4
6
8
1 0
1 2
10% of 80 sheep = 8 sheep
(10,1); (10,6)
x
– 2
(10,10)
coordinate stays the same
70% of 80 sheep = 8 x 7 = 56
10% of 80 sheep = 8 sheep
so
– 4
30% of 80 sheep = 8 x 3 = 24
56 sheep have 1 Lamb
so
a.)
Fill in the gaps to show which line has which equation
24 sheep have 2 Lambs which
Line ………E…….. has equation x = 10
makes 48 Lambs altogether.
Line ………A…….. has equation y = 10
Some points/coordinates
on line C are: (2,2); (10,10);
Line ………C…….. has equation y = x
(-3,-3). Notice that the
first coordinate is the
Line ………D……. has equation y = 3 x – 5
same as the last
ANSWER
2
coordinate. This means
Line ………B…….. has equation y = 1 x + 5
the x coordinate is the
same as the y coordinate x
2
ALTOGETHER
= y; y = x
48 + 56 = 104 LAMBS
b.) Does the line that has the equation y = 2x – 5 pass
through the point (10,10)?
Explain how you know
Using the coordinate pair (10,10); x = 10 and y = 10.
In the equation y = 2x – 5 we can replace y with 10 and x with 10 to give
10 = (2 x 10) – 5 so the equation becomes 10 = 20 – 5
20 – 5 = 15 this is not equal to 10 so the equation does not pass
through the point (10, 10)
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education