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 [ y = 2 cos(2x) ].
That line is horizontal on the graph. Its slope is zero.
Third and fourth