Quiky question before my test tommorow morning

  • #1
quiky question before my test tommorow morning!!!

i can't believe i duno where to find out how to do this:

1) find intersections of the graphs:
x^2+y^2=41
x+2y=6

and

2)which of the following function is equivalent to the following piece function.

x-3, if x>=3
f(x)={
3-x, if x<3

a) g(x)=|x-3| b) g(x)=|x+3| c) g(x)=-|x-3| d)-|x+3| e) none of these

this is off like a study guide checklist for the test.
 

Answers and Replies

  • #2
399
1
EasyStyle4747 said:
1) find intersections of the graphs:
x^2+y^2=41
x+2y=6

Rearrange x + 2y = 6 to get x = 6 - 2y. Then plug this into x2 + y2 = 41. You get:

(6 - 2y)2 + y2 - 41 = 0
 

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