What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?

Solution:

It is given that the equation is

6.4x + 2.8y = 44.4

We have to find the value of y when x = 3

6.4 (3) + 2.8y = 44.4

By further calculation

19.2 + 2.8y = 44.4

So we get

2.8y = 44.4 - 19.2

2.8y = 25.2

Divide both sides by 2.8

y = 9

Therefore, the value of y is 9.

What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?

Summary:

The value of y in the equation 6.4x + 2.8y = 44.4, when x = 3 is 9.