Advertisements
Advertisements
प्रश्न
Find the value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k.
उत्तर
Putting x = 2 and y = 1 in the given equation,
2x + 3y = k
⇒ 2(2) + 3(1) = k
⇒ 4 + 3 = k
⇒ k = 7
Therefore, the value of k is 7.
APPEARS IN
संबंधित प्रश्न
Express the following linear equations in the form ax + by + c = 0 and indicate the values of
a, b and c in each case :
-2x + 3y = 12
Check which of the following are solutions of the equation 2x – y = 6 and which are not :
(1) (3, 0) (2) (0, 6) (3) (2, −2) (4) (√3, 0 ) (5) `(1/2,-5)`
If x = 2𝛼 + 1 and y = 𝛼 – 1 is a solution of the equation 2x−3y + 5 = 0, find the value of 𝛼.
A three-wheeler scooter charges Rs 15 for first kilometer and Rs 8 each for every subsequent
kilometer. For a distance of x km, an amount of Rs y is paid. Write the linear equation
representing the above information.
If (2, 0) is a solution of the linear equation 2x + 3y = k, then the value of k is ______.
Any point on the line y = x is of the form ______.
The positive solutions of the equation ax + by + c = 0 always lie in the ______.
How many solution(s) of the equation 2x + 1 = x – 3 are there on the cartesian plane?
Find the solution of the linear equation x + 2y = 8 which represents a point on x-axis.
The linear equation that converts Fahrenheit (F) to Celsius (C) is given by the relation
`C = (5F - 160)/9`
- If the temperature is 86°F, what is the temperature in Celsius?
- If the temperature is 35°C, what is the temperature in Fahrenheit?
- If the temperature is 0°C what is the temperature in Fahrenheit and if the temperature is 0°F, what is the temperature in Celsius?
- What is the numerical value of the temperature which is same in both the scales?
