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values of x below the x axis

May i know what this problem all about... i just can imagine how it looks like but l as the values of x, how it is being done? how to write as set for the values of x? can anybody help?

**For what values of ***x* is the graph of 2*x* – 3y – 4 = 0 below the *x* – axis?

thanks a lot

Re: values of x below the x axis

For the graph to be below the x-axis you need to have**y<0**.

So solve for **y** to get **y=(2x-4)/3** and proceed to find the values of **x** for which the equation yields values less than 0.

As an example of how to express a set of (real) values, if you find that b<x<a [a,b are arbitrary constants] then the set of values x must belong to is (b,a).

Re: values of x below the x axis

will i think it should be done this way

x = (- infinity , 2)

can anybody correct my work if it's not right.

thanks

Re: values of x below the x axis