Please I need help in mathematics? PLEASE

Test Preparation
1

<p>I 've already done 2 practice tests from official study guide.Got 670 on the first one " math"
and 640 on the 2nd one
I always seem to get like 10 mistakes in all math sections.</p>

<p>And there is specific kind of problems that I never get to answer.Those involving parabolas like asking me about the slope of a parabola from the graph,or about the equation of the parabola.I already took the functions class last year and did great at it,but I always seem to just leave those questions because I don't know how to either get the slope,or the equation :/</p>

2

<p>Usually, you just have to use everything you know about the parabola (points that lie on it, the vertex, symmetry) and maybe obtain some equations that’ll enable you to solve for what you’re missing. I don’t understand what you mean by “slope” of a parabola – you can easily find the derivative dy/dx of y = ax^2 + bx + c (which is 2ax + b) but that won’t appear on an SAT.</p>

<p>I tend to reference AoPS sources because they can be really useful, so here ya go:
[Parabola</a> - AoPSWiki](<a href=“http://www.artofproblemsolving.com/Wiki/index.php/Parabola]Parabola”>Art of Problem Solving)</p>

<p>Perhaps you could try the introductory problem. The intermediate problem is significantly harder, but likely not beyond your reach.</p>