Question

give the geometric representation of 2 X + 9 is equal to zero as an equation one in and one variable second in two variables

Answer 1

In one variable :
2x+9=0
X=9/2
X=4.5
In two variable :
2x+0y+9=0
In this equation put the different values of y as 0,1, - 1..then u'll have the 3 solutions namely (4.5,0),(4.5,1)&(4.5,-1)
Just plot it on the graph
Hope it helps
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