Im not in high School, but I am studying for my GMAT and need some help with some stuff that I havnt done in years.
What are the formulas for finding the intercepts of a quadratic equation.
I think negetive b plus minus the square root of 4ac divided by 2a is this correct? which intercept does this give you? Whats the formula for finding the other intercept?
How do you solve a problem where you are given the intercepts and asked to choose which equation?
What equation has te intercepts of (-1,-5)
No graphing calculators allowed or else this would be easy.
isnt there another equation to find Y? I specifically remember there being one, but I cant remember what it is. i had an Algebra Teacher is 8th grade tell me what it was but I cant remember it, and I cant find it online anywhere.
I have a GMAT Study guide but it doesnt do a great job of explaining this stuff.
To find the y-intercept you substitute x = 0 and solve for y. Do find the x-intercept you substitute y = 0 and solve for x.
Take my advice and get a textbook.
By the way, if you spent a small amount of time looking through these forums you would quickly realise why I find your remark
In general to get the y-intercept you have to substitute x = 0 and solve for y.
Next time try being clearer in what you want to know. It will save a lot of time.