If (-3, y) lies on graph of y = 3x, then y =

Solution:

The general equation of a straight line is y = mx + c, where m is the slope of the line and c is the y-intercept.

It is the most common form of the equation of a straight line that is used in geometry.

The equation of a straight line can be written in different forms such as point-slope form, slope-intercept form, general form, standard form, etc.

A straight line is a two-dimensional geometrical entity that extends on both its ends till infinity.

Given (-3, y) lies on the graph of y = 3x

We know that if a point lies on a graph, it must satisfy the equation

Substituting x = -3 and y as y in y = 3x,

y = 3(-3)

y = -9

If (-3, y) lies on graph of y = 3x, then y =

Summary:

If (-3, y) lies on the graph of y = 3x, then y = -9