Write the equation of the circle: center at (0,0), diameter 18

x^2+y^2=81

Step-by-step explanation:

the equation is

(x-h)^2+(y-k)^2=r^2

since the center is (0,0) you don't even put it in the equation

so all you will have is the x and the y

you leave in the square (^2)

you divide the diameter by 2 to get the radius

9

then you square the radius

81

answer: what if i dont want to show my work boi.

step-by-step explanation: im watching dbz and eating popcorn leave meh alone

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)