Question

Consider the linear equation 3x + 2y = 15. When x = 1, what is the y-coordinate?

Answer 1

When x=1 the y-coordinate is 6.

Explanation:

The given linear equation is

`3x+2y=15`

We need to find the y-coordinate when x=1.

Substitute x=1 in the given equation, to find the y-coordinate.

`3(1)+2y=15`

`3+2y=15`

Subtract both sides by 3.

`3+2y-3=15-3`

`2y=12`

Divide both sides by 2.

`(2y)/(2)=(12)/(2)`

`y=6`

Therefore at x=1 the y-coordinate is 6.