Answer:
The value of y in 3x + 4y = 43 when x equals 9 is 4.
Solution:
The given equation is as follows:
3x + 4y = 43
We are asked to find the value of y when x=9
So we have to substitute the value of x in the given equation and then simplify it to get the value of y.
Now, by substituting the value of x we get
[tex]3 \times 9+4 y=43[/tex]
Now we solve the equation for the value of y as there is only one variable in the equation.
27 + 4y = 43
Taking 27 to the other side
4y = 43 - 27
4y = 16
y = 4.
Hence the value of y when x equals 9 is 4.
