
Kenneth S. answered 08/10/17
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
To pass math, you must be attentive to the lecture and to the reading. Math uses many precisely defined terms, and the subject rests upon that basis.
You ought to have described the graph more completely. The graph of the function y = 3x+1, as an example, is the graph of a continuous function because the domain is all Reals, and the graph turns out to be a straight line having slope 3, y-intercept 1.
But some graphs have domains that are restricted, e.g. x might be only integers--in that case, the graph would be discrete, just a collection of dots, or points. There would be no curves or lines connecting one dot to any other, for a discrete function.
The best help that I can give is to urge you to strive for depth of understanding--that will serve you well. Being disinterested or indifferent will only ensure mediocrity (represented by "I just need to pass math"). Mediocrity does not lead to good future job prospects.