Definition Any equation in which all the terms are of degree 0 and 1 and it has two variables or unknown is known as a linear equation in two variables. An equation of the form
where a, b, c are real numbers, are variables, is called a linear equation in two variables.
Each one of the following equations is a linear equation in two variables:
Explanation: Now let us discuss the equations one by one
Equation 1: The equation has two variables x and y and terms are either degree 1 or 0 so it is a linear equation in two variables.
A man can row a boat in still water at the rate of 6 km per hour. If the stream flows at the rate of 2 km/hour, he takes half the time going downstream than going upstream the same distance, His average speed for upstream and down stream trip is | |||
Right Option : B | |||
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At present ages of a father and his son are in the ratio 7 : 3, and they will be in the ratio 2 : 1 after 10 years. Then the present age of father (in year) is | |||
Right Option : C | |||
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In a number of two digits, unit's digit is twice the tens digit. If 36 be added to the number, the digits are reversed. The number is | |||
Right Option : C | |||
View Explanation |
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One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
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A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.