Page 343 - Start Up Mathematics_8 (Non CCE)

2. Given below is a table of the stretch of a spring in a balance. Draw a graph on the basis of this
table.

Stretch (in cm) 0.5 1 1.5 2

Weight (in g) 200 400 600 800
3. A car travelled for 14 hours, starting at 4:00 hours. The speed of the car at different hours is given below:

Time 4:00 6:00 8:00 10:00 12:00 14:00 16:00 18:00
Speed (in km/h) 35 50 60 70 80 60 55 40

Draw a graph to represent the above data.
4. The following table shows the sales of a commodity during the years 2004–2009.
Years 2004 2005 2006 2007 2008 2009

Sales (in lakhs of `) 1.6 1.8 2.2 3.4 5.2 6.8
Draw a graph to represent the above data.
5. Draw a graph to convert 1 to 7 miles to kilometres given that 1 mile = 1.6 km.
6. The table given alongside gives the
temperature in ºC and its corresponding
value in ºF. Temperature (°C) 20 40 60 80 100
Draw a graph by taking temperature in °C Temperature (°F) 60 100 140 180 210
on X-axis and °F on Y-axis.
7. The given table shows the displacement Time (in s) 0 1 2 3 4
of a body at different times. Draw a
displacement–time graph to describe the Displacement (in m) 2 4 6 9 12
motion of the body.

AT a Glance

Ê Value of component ˆ ∞
1. In a pie chart, the central angle for a sector (or a component) = Á Total value of all components ¥ 360 ˜ ¯
Ë
Central angle of component
Percentage value of component =  ¥ 100
360

Central angle of component Total of component values¥
Value of a component = 
360
2. On a graph, the x-coordinate of a point is its distance from Y-axis and the y-coordinate of a point is its
distance from X-axis.
3. Any point on the X-axis has its y-coordinate zero.
4. Any point on the Y-axis has its x-coordinate zero.

Review Exercises

Multiple ChoiCe Questions
The given histogram shows the number of runs scored by a batsman in 20-20 cricket matches. Read the
histogram and answer questions numbered 1–3.

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