Question

If (a , 3) is the point lying on the graph of the equation 5x + 2y = -4 , then find a


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Answer 1

Step-by-step explanation:

x= a

y= 3

According to eq.

5a + 2(3) = -4

5a + 6 = -4

5a = -4 - 6

5a= -10

a = -2

Answer 2

Answer :

a = -2

Solution :

Here ,

The given equation of straight line is ;

5x + 2y = -4

Also ,

It is given that , the point (a , 3) lies on the graph of the given equation .

Thus ,

The coordinates of the point (a , 3) must satisfy the given equation .

Thus ,

Putting x = a and y = 3 in the given equation ,

We have ;

=> 5x + 2y = -4

=> 5×a + 2×3 = -4

=> 5a + 6 = -4

=> 5a = -4 - 6

=> 5a = -10

=> a = -10/5

=> a = -2

Hence ,

Required answer is ; a = –2 .