Question

What does b represent in the equation of a line in the form y = mx + b?
The slope
The y-intercept
The x-intercept
The value of x when y = 0

Answer 1

b is called "the vertical intercept" and is the value of y when x = 0.  Something like an initial value!

Answer 2

Answer:

The y-intercept

Step-by-step explanation:

The graph of every non-vertical linear equation must intersect the y-axis. The intersection of a line with the y-axis is called the y-intercept. We label the y-intercept on a graph as the point (0, b).