If (-2, y) lies on the graph of y = 4x, then y =

Solution:

In the cartesian system, the x-coordinate of a point is its perpendicular distance from the y-axis.

It is measured along the x-axis which is positive along the positive direction and negative along the negative direction.

Given, the point (-2, y) lies on the graph of y = 4x.

We have to find the value of y.

Now, y = 4x ---------------------- (1)

Put x = -2 in (1)

y = 4(-2)

= -8

Therefore, y = -8

If (-2, y) lies on the graph of y = 4x, then y =

Summary:

If (-2, y) lies on the graph of y = 4x, then y = -8.