Question

If (-3, y) lies on the graph of y = 3x, then y = a. 1/27 b. -1 c. -27

Answer 1

y = -9

(-3 , - 9)

Explanation:

Given that the equation of graph

y = 3x

and the co-ordinates are ( -3 , y )

where x = -3

So, put the value of x in the equation of graph above

y = 3(-3)

y = -9

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Answer 2

The correct value of y = -9.

Explanation:

We know that there is a graph which represents the line
`y = 3x` and we are given a point (-3, y).

If this point (-3, y) lies on the graph, then we are to find the value of y.

For that, we will substitute the given coordinate of x in the equation of the line to find y:

`y = 3x`

`y=3(-3)`

`y = -9`

Therefore, the correct value of y is -9.