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Equations
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India
Class IX

Problem solving with equations II

Lesson
Practice

Interactive practice questions

Is $x=\frac{1}{4}$x=14​ a solution of $x+\frac{2}{3}=\frac{11}{12}$x+23​=1112​?

Yes

A

No

B
Easy
< 1min

Is $x=\frac{7}{12}$x=712​ a solution of $x-\frac{4}{9}=\frac{17}{36}$x−49​=1736​?

Easy
< 1min

Consider the relationship between the number of pink triangles $\left(p\right)$(p) and the number of columns $n$n.

Easy
2min

A racing car starts the race with $120$120 litres of fuel. From there, it uses fuel at a rate of $3$3 litres per minute.

Easy
4min
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Outcomes

9.A.P.1

Definition of a polynomial in one variable, its coefficients, with examples and counterexamples, its terms, zero polynomial. Degree of a polynomial. Constant, linear, quadratic, cubic polynomials; monomials, binomials, trinomials. Factors and multiples. Zeros/roots of a polynomial/equation.

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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