Hi,

Note Cartesian Plane is made up of 4 quadrants; I,II,III & IV

Quadrant I both x and y values are positive. (Quadrants named counter-clockwise)

Here quadrant II has Pt(-3,4) and the Pt(-5,4) you refer to in 2nd question

Pt(-5,4)is 5 units to the left of the y-axis and 4 units above the x-axis

As to: "the point (a,b) is _______ in quadrant II when a<0"

considering, when a<0, Pt(a,b) may be in the III quadrant, depending the y value b.  

Recommend the word "sometimes" for the blank



 

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