My question is kind of basic and stupid... but how in the world do you graph THIS question??
I need someone to walk me through it.
y = x^2 - 3x - 4
Should i factorise it or what?? It seems like iI should know this question but i don't.
My question is kind of basic and stupid... but how in the world do you graph THIS question??
I need someone to walk me through it.
y = x^2 - 3x - 4
Should i factorise it or what?? It seems like iI should know this question but i don't.
Yep that looks right to me. If you have a basic calculator you can put it into table mode, and input the equation. It then gives you the results for any input of $\displaystyle x$.
However, it is easy to calculte without a calculator. Just get take values for $\displaystyle x$, say -5, 0, 5, and stick them into the equation. Work it out, and you will obtain a table of results.
ie.
$\displaystyle y=x^2-3x-4$
Take $\displaystyle x=0$
then, $\displaystyle y=0^2-(3\times0)-4$
Therefore, $\displaystyle y=-4$
Do the same for the other values, and then you can plot them.