Circles

[jolly saddle]

no clue

[jagged dust]

Have you done the discriminant yet?

[jolly saddle]

i think so

i remember hearing it

[topaz mist]

@jolly saddle

the don't forgot to give it as a range i forgot that

[jolly saddle]

thanks a lot bro

gimme a couple mins to read it

[topaz mist]

don't forgot to give the answer as a range

[jolly saddle]

y do we have to put (3x-2) into x^2 + y^2 = r^2

eventho it says that line doesnt touch the circle

and how do we know when to use the discriminant

[plucky sandal]

If it tells you how many times something intersects

Your probably going to use the discriminant

words like "tangent"

etc

[jolly saddle]

y is it b^2 - 4ac < 0

i was told if it was <0 for a discriminant then it means there are 0 real solutions

and > 0 is for 2 real solutions

[jolly saddle]

oh ok thanks

[topaz mist]

if the line doesn't touch the circle

there are 0 solutions

[jolly saddle]

ohhh

yh that makes sense

thanks

[jolly saddle]

so is it - root 4/10 < r < root 4/10

[topaz mist]

but the radius can't be negative tho

[jolly saddle]

so what would the range be

[topaz mist]

0<r<root 4/10 i belive

[jolly saddle]

lemme check

yh ur right

thanks bro

[jolly saddle]

does it have no real roots cuz its equal to -11

[topaz mist]

is that a differant question?

[jolly saddle]

yh

the answer to part a of this question is ( x + 5)^2 + 11

and it says b) hence, show why this has no real roots