On a sheet of graph paper , using a scale of 2cm to represent 1 unit on the xaxis and 1 cm to represent 1 unit on the y-axis, draw the graph of the linear
equation y = 2x + 3 for values of x from -2 to 2.
(ii) the points (-1,a) and (b,4) lie on the graph in (i). Find the value of a and b
Answers
Step-by-step explanation:
Q.11 A shopkeeper has imported set of bowls at rs 399. He gives two sets of bowls for the price of one
set and still makes a profit of 14%. What did
the shopkeeper pay for one set of bowls?
Given : linear equation y = 2x + 3
values of x from -2 to 2
(ii) the points (-1,a) and (b,4) lie on the graph
To Find : Draw the graph
the value of a and b
Solution:
y = 2x + 3
x y = 2x + 3
-2 -1
-1 1
0 3
1 5
2 7
Graph is attached.
(- 1 , 1) lies on the graph hence comparing with (-1 , a)
Value of a = 1
(0.5 , 4) lies on the graph comparing with (b , 4)
Value of b = 0.5
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