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India
Class IX

Formulas, substitution and equations II

Interactive practice questions

Translate the statement into an equation.

"The length ($L$L) of a box is nine times the width ($W$W)."

Easy
< 1min

Translate the statement into an equation.

"The weight of a human ($H$H) is seven times the weight of a greyhound ($G$G)."

Easy
< 1min

Translate the statement into an equation.

"The length ($L$L) of a swimming pool is triple the width ($W$W)."

Easy
< 1min

Translate the statement into an equation.

"The revenue ($R$R) of a company is double the cost ($C$C)."

Easy
< 1min
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Outcomes

9.A.LETV.1

Recall of linear equations in one variable. Introduction to the equation in two variables. Prove that a linear equation in two variables has infinitely many solutions, and justify their being written as ordered pairs of real numbers, plotting them and showing that they seem to lie on a line.

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