Simple, this is the equation y=-7 Your y-intercept is -7, there is no slope, it's not increasing or decreasing. Your slope is nothing (0) and the y-intercept is -7. This being said, the line will be a horizontal line, going straight across at -7, forever. -----------------(-7)------------------------

Here's the given equation: y = -7 . The y-intercept is the value of 'y' when x=0 . What is the value of 'y' when x=0 ? Here, let me give you a hint: The equation is y = -7 . What is the value of 'y' when x=0 ? The equation says that 'y' is always -7. It doesn't CARE what 'x' is. 'y' is ALWAYS -7 . So when x=0, 'y' is -7. That's the y-intercept. Now, how about the slope of the graph ? You're used to seeing y = (slope) x + (y-intercept) or y = m x + b But this equation only has y = b . It has no ' m x ', so you don't know how to handle it. Here, let me help. I'll re-write the equation, without changing it, and when I do that, I expect to see you slap yourself in the forehead. The equation, in its original form: y = - 7 The equation, re-written: y = (0)x - 7 Did the light-bulb go on yet ?