Question 289176
You graph y = x+3 and then you shade in the area above the line of the equation.


The graph looks like this:


{{{graph(400,400,-10,10,-10,10,x+3)}}}


Since the equation is y > x+3, any value of y above that line will be valid.


For example:


When x = 0, y = 3 in the equation y = x + 3.


When x = 0, y > 3 in the equation y > x + 3.


Any value above y = 3 when x = 0 is valid.


If you look at y > x + 3 for all values of x, then y = x + 3 is the line and y > x + 3 is any value above the line.


If you had several equations, like y < 5, x > 0 and y > x + 3, then you would graph all 3 equations of:


y = 5
x = 0
y = x + 3


and you would shade in the area on the graph that is above the line y = x + 3, to the right of x = 0, and below y = 5.


The graph of those equations would look like this:


{{{graph(400,400,-10,10,-10,10,x+3,y = 5)}}}


A picture of these 2 graphs with their shaded areas is shown below:


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