question_answer

  

(a) Draw the graph of the function y = 3x + 1.

(b) The given graph represents the total runs scored by two batsmen A and B, during each of the ten different matches in the year 2014.

Study the graph and answer the following questions:

(a) What information is given on the two axes?

(b) Which line shows the runs scored by batsman A?

Answer:

(a) Let         y = 3x +1                                            ....(1)

Putting x = 0,1,2, in equation (i)

at                           x = 0 then

\[y=3\times 0+1=1\]

at                           x = 1 then

\[y=3\times 1+1=3+1=4\]

ata                            x = 2 then

\[y=3\times 2+1=6+1=7\]

Thus

X 0 1 2 Y 1 4 7

(b) (i) The horizontal axis (or the x-axis) indicates the matches played during the year 2014. The vertical axis (or the y-axis) shows the total runs scored in each match.

(ii) The dotted line shows the runs scored by Batsman A. (This is already indicated at the top of the graph).