Question

x-3=0 and 4x-3y=20 by elimination method?

Answer 1

Answer:

4x−3y+4=0

⟹x=

4

−4+3y

Let, y=4, then x=

4

−4+3(4)

=2

Similarly, when y=0,x=−1

4x+3y−20=0

⟹x=

4

20−3y

Let, y=4, then x=

4

20−3(4)

=2

Similarly, when y=0,x=5

Plotting the above points on the graph, we get, the intersecting point i.e(2,4)

Area of the region bounded by these lines and x-axis =

2

1

×6units×4 units

=12 sq. units.

Answer 2

Answer:

x-3y=0

4x-3y=20

- + -

_______

-3x=-20

x=20/3

putting value of x.

x-3y=0

20/3-3y=0

3y=20/3

y=20/3*3

y=20/9

..