SOLUTION: i need to graph {{{f(x)=-3x^2+x-5}}} Can I use f(x)=mx+b? The {{{x^2}}} is throwing me off, can you help?

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Question 140722: i need to graph f%28x%29=-3x%5E2%2Bx-5 Can I use f(x)=mx+b? The x%5E2 is throwing me off, can you help?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
Thank you for this answer. Can you explain how to get data points to graph from
this equation? I promise I am not being intentionally dense.
To get any points to graph all you have to do is set x to any value & saolve for y [f(x)]
example:
let x=1
-3*1^2+1-5
-3*1+1-5
-3+1-5=-7 the y value when x=1 or (1,-7)
let x=-2
-3*-2^2-2-5
-3*4-2-5
-12-2-5=-19 the y value for x-=2 (-2,-19)
hope this helps
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f(x)=-3x^2+x-5
+graph%28+300%2C+200%2C+-6%2C+5%2C+-25%2C+10%2C+-3x%5E2+%2Bx+-5%29+ (graph 300x200 pixels, x from -6 to 5, y from -25 to 10, -3x^2 +x -5).