Question

Choose the correct pair among the choices given below

Column I		Column II
I	The graph of the linear equation $3x +7y = 21$ is the line which meets the y-axis at the point?	P	$(0, 0)$
II	The graph of the linear equation $7x +3y = 21$ is the line which meets the x-axis at the point?	Q	$(0, 3)$
		R	$(3, 0)$
		S	$(3, 3)$

• A. II—R
• B. I—S
• C. I—Q
• D. II—P

Answer 1

Answer: (A), (C)

The graph of the linear equation $3 x+7 y=21$ meet $y$-axis at point where $x=c$. So, when $x=0$
$0+7 y=21 \quad \Rightarrow y=3$
So, it meets $y$-axis at $(0,3)$
Similarly, graph of the linear equation $7 x+3 y$ $=21$
Will meet of $x$-axis at point where $y=0$ $\Rightarrow 7 x=21$
So $x=3$
So, the point is $(3,0)$.