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\[y^2=4px\]find out the p
you can do that or do you need help?
I need help, I don't understand /:
1 way to find p is to use absolute value of the distance between the origin of your parabola and the directrix.
since we are finding positive p you have to multiple by -1
but how to I find the correct absolute value?
look at the graph
when y=10 x=5 can't we make use of that @saseal ?
@R05E you have to be sure if that is your focus
the ------ line shows the directrix @saseal ?
yea thats the directrix line
then p=5 @saseal ?
but if we put y=10 and x=5 we get p=1... why is that? :\
because directix=-p and focus is (p,0)
it just happens in this question that y=10 x=5 at the focus, doesnt mean it will always happen
So the equation of the parabola is y^2=20x or y^2=4x ? I'm confused... @saseal ...:(
y^2=4(5)x -> y^2=20x
but by plugging in the coordinates we cant make sure of the equation... why's that?
theres always 2 answers to the parabola unless you are at origin. good luck pluggin em out
sorry sorry I got that wrong thank you very very much by the way!!! @saseal... for your patience and kindness!! I love you!! I will medal you..!!!