To graph "y ≠ a" on a number line, first plot the point corresponding to "a." Then, use an open circle at "a" to indicate that this value is not included in the solution. Finally, shade the entire number line except for the point "a" to show that all other values are acceptable for "y."
8
A horizontal line crossing the y axis at 3.
Third and fourth
The graph of [ y = -3x ] is a straight line, through the origin, with slope of -3 .
find the constant of variation and the slope of the given line from the graph of y=2.5x
The equation you have given, y + 2 = 7, does not describe a line, it describes the number 5. You would not graph a single number, there is nothing to graph.
y= -5
8
The graph is a horizontal line at y=3
No. If you graph it, it doesn't. No line is horizontal unless the equation is y=A, where A is any real number.
A horizontal line crossing the y axis at 3.
The graph of y = x - 8 is a straight line. The slope of the line is 1, and it intersects the y-axis at the point y = -8.
The diagonal line collapses into a single point on that line.
3
That line is horizontal on the graph. Its slope is zero.
That line is [ y = 2 cos(2x) ].
Third and fourth