1. ## Graphs

Describe in words the graph of each of these curves below. Include in your description the shape, along with other possible relevant information such as length, width, and center points.

a. Y = 3X2

b. (X-1)2 + (Y-8)2 = 16

c. (X+2)2 + (Y-4)2 = 36

d. Y = X2 - X

Thanks! Lisa

2. Originally Posted by LisaAnn_86
Describe in words the graph of each of these curves below. Include in your description the shape, along with other possible relevant information such as length, width, and center points.

a. Y = 3X^2

b. (X-1)^2 + (Y-8)^2 = 16

c. (X+2)^2 + (Y-4)^2 = 36

d. Y = X^2 - X

Thanks! Lisa
First, learn how to represent exponentiation, that is, how to show something is being raised to a power when writing an equation. The symbol ^ is used, as illustrated in my red editing above.

Now, do you realise that:

1. $\displaystyle y = ax^2 + bx + c$ is the standard equation for a parabola. Do you know what a parabola looks like and what important features its graph has?

2. $\displaystyle (x-h)^2 + (y-k)^2 = r^2$ is the standard equation for a circle. Do you know what important features the graph of a circle has?

If the answer to any of my questions is no, then you need to go back to your class notes and textbook and do some serious revision.

If you answered yes to all of my questions, then I really don't understand what your problem is.

Are you havng trouble finding the important features? If so, then please state clearly what it is you can't find.