Question

The solution if the equation 5x+2y-9=0 is:
a (2,-1)
b (1,2)
c (-1,2)
d (-2,1)​

Answer 1

Answer:

option b is correct

Step-by-step explanation:

hope it will help you.

Answer 2

Given:

Equation: 5x+2y-9=0

To find:

The equation's solution

Solution:

The required solution is (1, 2). (Option b)

We are given the values of x and y that can be put in the given equation to find its solution.

We will substitute the given values of x and y to determine which values satisfy the equation.

i. (x, y)=(2, -1)

=5(2)+2(-1)-9

=10-2-9

=10-11= -1

-1 ≠0

ii. (x, y)=(1, 2)

=5(1)+2(2)-9

=5+4-9

=9-9=0

iii. (x, y)=(-1, 2)

=5(-1)+2(2)-9

= -5+4-9

= -10

-10≠0

iv. (x, y)=(-2, 1)

=5(-2)+2(1)-9

= -10+2-9

= -17

-17≠0

So, only (1, 2) makes the equation equal to 0.

Therefore, the required solution is (1, 2).