Advertisements
Advertisements
प्रश्न
Write two solutions for the following equation :
3x + 4y = 7
उत्तर
Given that 3x + 4y = 7
Substituting `x = 0 ` in this equation, we get
`3 xx 0 + 4y = 7`
⇒ ` y = 7/4`
So. `(0. 7/4)` is a solution of the given equation substituting `x = 1 ,` in given equation. We get
⇒ `3 xx 1 + 4y = 7`
⇒ 4y = 7 - 3
⇒ = 4
⇒ y = 1
So, (1.1) is a solution of the given equation
∴ `(0. 7/4)` and (1.1) are the solutions for the given equation.
APPEARS IN
संबंधित प्रश्न
Write four solutions for the following equation:
x = 4y
Check whether the following is the solution of the equation x – 2y = 4 or not:
`(sqrt2", "4sqrt2)`
Find the value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k.
Express the following linear equations in the form ax + by + c = 0 and indicate the values of
a, b and c in each case:
y = `x / 2`
The cost of ball pen is Rs. 5 less than half of the cost of fountain pen. Write this statement as
a linear equation in two variables.
Write two solutions of the form x = 0, y = a and x = b, y = 0 for the following equation :
−4x + 3y = 12
A number is 27 more than the number obtained by reversing its digits. If its unit’s and ten’s
digit are x and y respectively, write the linear equation representing the above statement.
The sum of a two digit number and the number obtained by reversing the order of its digits
is 121. If units and ten’s digit of the number are x and y respectively then write the linear
equation representing the above statement.
The coordinates of points in the table:
x | 0 | 1 | 2 | 3 | 4 |
y | 2 | 3 | 4 | –5 | 6 |
represent some of the solutions of the equation x – y + 2 = 0.
How many solution(s) of the equation 2x + 1 = x – 3 are there on the number line?