Question 179796
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*[tex \Large y = 1] describes the set of all ordered pairs where the <i>y</i>-coordinate is equal to 1.  Hence, this is a horizontal line that intersects the <i>y</i>-axis at the point (0, 1).  (see the red line on the attached graph)



*[tex \Large y = x] describes the set of all ordered pairs where the <i>y</i>-coordinate is equal the <i>x</i>-coordinate.  Because this equation is equivalent to *[tex \Large y = (1)x + 0] It is a line with a slope of 1 and a <i>y</i>-intercept = 0.  (see the green line on the attached graph)


{{{drawing(
600, 600, -5, 5, -5, 5,
grid(1),
graph(
600, 600, -5, 5, -5, 5,
y = 1,
y = x
))}}}




John
*[tex \LARGE e^{i\pi} + 1 = 0]
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