Is 3x^2 − y = 5 a function or not a function
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Answer:
Integers ={Positive Natuaral Number +Natural numbers having negative sign behind it+Zero}
={------,-3,-2,-1,0,1,2,3,..........}
→Points marked on the X and Y axis on the Coordinate Plane=Integers only
→Point to be marked on the coordinate plane =(-0.5,2)
→As, points on both X and Y axis are integers only.To mark, -0.5 , mark a line between , 0 and -1,that will be ,-0.5.
→You can mark , any terminating decimal on the number line, which is marked with integers only.
→Terminating decimals are those decimals having in the denominator of a fraction.
So, to plot any terminating Decimal on the coordinate plane, you have to use property of Rational Numbers ,which is, you can find infinite number of terminating Decimal between two terminating Decimal.
→Mark -0.5 between 0 and -1 on the X axis.Similarly, mark integer 2 on the Y axis.Draw a line parallel to Y axis ,passing from (-0.5,0) and line parallel to X axis passing through (0,2).The intersection of these two lines will be required point (-0.5,2).
