Draw graph of x + y = 7.

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4. Linear Equations in Two Variables

easy

Draw the graph of $x + y = 7.$

Option A

Option B

Option C

Option D

Solution

To draw the graph, we need at least two solutions of the equation. You can check that $x = 0$, $y = 7$, and $x = 7$, $y = 0$ are solutions of the given equation. So, you can use the following table to draw the graph :

$x$	$0$	$7$
$y$	$7$	$0$

Draw the graph by plotting the two points from Table $2$ and then by joining the same by a line (see Fig.)

Standard 9

Mathematics

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easy

Draw the graph of $x + y = 7.$

Solution

Similar Questions

Given the point $(1,\, 2)$, find the equation of a line on which it lies. How many such equations are there ?

Express the following linear equations in the form $ax + by + c = 0$ and indicate the values of $a$, $b$ and $c$ in each case : $y-2=0$

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The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be $\rm {Rs.}$ $x$ and that of a pen to be $\rm {Rs.}$ $y$).

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The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.

(Take the cost of a notebook to be $\rm {Rs.}$ $x$ and that of a pen to be $\rm {Rs.}$ $y$).