A vertical line that passes through -2 on the x-axis.
-2
That line is [ y = 2 cos(2x) ].
-2/3
5
the line of symmetry would occur at x=0
The diagonal line collapses into a single point on that line.
-2
That line is [ y = 2 cos(2x) ].
-2/3
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 = 2 The graph is a horizontal line passing through the point Y=2 on the Y=axis. The line is parallel to the X-axis, and exactly 2 units above it everywhere.
5
It's a line of infinite extent, and should be drawn in blue or black on the graph, solid, and with the smallest possible thickness. The line is vertical, perpendicular to the x-axis, passing through the point [ x = -2 ], parallel to the y-axis, and traversing the Second and Third Quadrants.
the line of symmetry would occur at x=0
that's easy... there are 2 choices you can use a line graph or a histograph
3
This is the graph of a diagnol line. Range: (-infinity, infinity)