Easiest way to graph an equation?

Question

compassionate · Answer

Say I have an equation in y = mx + b 

... Lets ay, y = 2x + 4

compassionate · Answer

y-intercept = 4, so I would graph 4 on the y-axis 

Now, my slope is 2x, so I could just graph 2? Or would I have to plug in values for 2, like 
x = 1 
x = 0
x = -1 
 
or will just graphing 2 be enough?

nnesha · Answer

slope = rise over run 
and you can write 2 as 2/1 $$\huge\rm slope =\frac{ rise  }{ run }$$

campbell_st · Answer

And I thought the easiest way was to use technology


can you graph y = x/(x^2 + 1) using this method

compassionate · Answer

Right, so would I calculate my slope from my y-intercept.

compassionate · Answer

Let's stick to linear equations @campbell_st , all those hyperboles and binomials don't sit well with me

campbell_st · Answer

well I'd still say technology is the easiest method is if its only straight lines

compassionate · Answer

If only I could use graphing technology on standardized testing

nnesha · Answer

yes right first draw a point on y-axis (yintercept) and btw slope is just 2 x is a variable not slope 
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compassionate · Answer

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