Question

. Which of the following is the equation of a circle with a radius of 2 and its center at (4, 3)?
(Points : 5)
(x 4)2 + (y + 3)2 = 2

(x + 4)2 + (y 3)2 = 2

(x 4)2 + (y + 3)2 = 4

(x + 4)2 + (y 3)2 = 4
I think it is b but i am unsure

Answer 1

is it (x - 3)^2 + (y - 2)^2 = 4

Answer 2

i mean -4

Answer 3

the center is (4, 3), so the left side should be (x - 4)^2 + (y - 3)^2

Answer 4

idk how you got (x - 3)^2 + (y - 2)^2

Answer 5

lol yeah I kinda have a messed up calculator :( lol

Answer 6

no need for a calculator since you're just plugging in (or replacing) variables with numbers

Answer 7

thats probaby how im confusing myself ugh lol

Answer 8

maybe, i guess that's a sign you're probably too dependent on your calculator, but idk

Answer 9

but all you're doing is going from

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

to

(x-4)^2+(y-3)^2=2^2 .. replace h with 4, k with 3, r with 2

(x-4)^2+(y-3)^2=4

Answer 10

yeah i kinda am lol ever since highschool all the teachers would say is use your calculator not ur head you could be wrong but the calculata is always right lol

Answer 11

well if you type it in wrong, then the calculator is wrong

it does exactly what it's told to do

Answer 12

they also say if you dont know the answer then "guess" but i feel like thats kinda stupid lol

Answer 13

yeah so true

Answer 14

and calculators don't handle everything...otherwise, why not just hand the job over to the calculator

Answer 15

well they're teaching to the test because you can't guess if it isn't multiple choice