Question

Part 1: Solve each of the quadratic equations below. Show your work.

x2 − 16 = 0 and x2 = −2x + 24

Part 2: Describe what the solution(s) represent to the graph of each.

Part 3: How are the graphs alike? How are they different?

Answer 1

@sadrian , this is the complete question.

Answer 2

okay then
what's the pary u don't get?

Answer 3

I don't get part 2 because I understand part 1 and I know how to do part 3.

Answer 4

do you know what's the shape eq1 and eq2 will give you if you plot them?

Answer 5

i don't think it's a straight line. I don't think it's a circle either

Answer 6

I'm on it ...

Answer 7

The first equation x^2-16=0 is two straight lines

Answer 8

not really. I'll give you a hint. you have x^2

Answer 9

The second one is also two straight lines but wider then the first.

Answer 10

Ok. The plot they give you is a parabola. http://www.wolframalpha.com/input/?i=x^2-16%3D0. this is the first

Answer 11

the other is indeed wider

Answer 12

Okay, I got the first one.

Answer 13

I want u to get why it is a parabola. For every x that belongs to R, you will get a y. if you give a value between 4 and -4, you will get a negative y..etc, so you end up with a single curve

Answer 14

try applying the same for eq2. you'll end up with two solutions. Two points of intersection with the x axis.

Answer 15

Okay I'm on it right now.

Answer 16

I got it, thanks (:

Answer 17

:)