Question

The cost of a pen is three times the cost of a pencil, write a linear equation in two variables to represent this

statement.​

Answer 1

here is your answer in above picture

Answer 2

Answer:

3x n

Step-by-step explanation:

$\\\;\underbrace{\underline{\sf{Understanding\;the\;Question}}}$

The cost of a pen is three times the cost of a pencil, so we have to write a linear equation in two variables

$\\\;\underbrace{\underline{\sf{Understanding\;the\;Concept\; for\; linear\; equation}}}$

An equation for a straight line is called a linear equation. The general representation of the straight-line equation is y=mx+b, where m is the slope of the line and b is the y-intercept. Linear equations are those equations that are of the first order. These equations are defined for lines in the coordinate system.

Let's do it !!

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★ Formula Used :-

The standard form for linear equations in two variables is Ax+By=C. For example, 2x+3y=5 is a linear equation in standard form. When an equation is given in this form, it's pretty easy to find both intercepts (x and y). This form is also very useful when solving systems of two linear equations.

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★ Solution :-

Let cost of pen be rupees p and the be rupees x

$=p=cost \;of\; pen\; in \;rupees\\ x=cost\; of\; pencil$

Therefore ,cost of 10 is equal to 3 times the cost of pencil

p=3x n