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Exercises: Linear functions as lines in coordinate systems

Describe in words the position of the line with the equation:

$y = - 1$

For this task you need the following basic knowledge: Description of line equations
This is a constant function, i.e. the function does not depend on x.Each of the x-values has the y-value -1 . The equation describes a straight line that is parallel to the x-axis and that has 1 below the x-axis.
$\Rightarrow y = - 1$ describes a straight line with a slope of 0 through the point $(0, - 1)$ .
the graph looks like this:
$x + y = - 2$

For this task you need the following basic knowledge: Description of line equations
$y + x = - 2$
Rewrite so that y is alone on one side of the equals sign.
$y = - x - 2$
Read the slope $m$ and the y-intercept t.
The equation describes a straight line with the slope m=-1 and the y-intercept $t = - 2$ (She goes through the point $(0, - 2)$ ) , i.e. the bisector of the II and IV quadrants shifted down by 2.
The graph looks like this:

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