Question

What is the solution of y ? 4x = 0 and 3x + 6y = 9? A. `x= 0`, `y= (3)/(2)` B. `x= (1)/(3)`, `y= (4)/(3)` C. `x = 1`, `y = -1` D. `x= (1)/(4)`, `y= (2)/(3)`

Answer 1

A. `x= 0`, `y= (3)/(2)`

Explanation:

Dividing the first equation by 4 gives ...

x = 0

Substituting that into the second equation gives ...

3·0 +6y - 9

y = 9/6 = 3/2 . . . . divide by 6, reduce the fraction

The solution of the set of equations is ...

x = 0, y = 3/2

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The question here asks "what is the solution of y ?". That answer is y = 3/2.