Step-by-step explanation
If we solve the given equation for y, we have:
The above equation corresponds to the equation of a horizontal line whose y-coordinate is always -2.
The slope of a horizontal line is 0.
On the other hand, the y-intercept of a graph is the point where the graph crosses the y-axis. It is often referred to with just the y-value. In this case, we can see that the y-intercept of the line is -2.
Finally, we can see in the graph that the value of x is not always equal to the value of y.
Answer
The statement that is true about the line whose equation is y + 2 = 0 is:
The y-intercept is -2.