sdajiosfjai
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#1
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#1
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Points A and B lie on a circle with centre P. The point AQ has coordinates (1, -2) and M is the midpoint of AB with coordinates (3, 1).

a)Find an equation for the line 𝑙 through M and P

Given that the 𝑥 coordinate of P is 6,
b)Find the equation of the circle

I've answered part a but I don't know how to start part b. Please help! )
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Muttley79
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#2
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(Original post by sdajiosfjai)
Name:  Screenshot 2021-10-24 143233.png
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Size:  11.5 KB
Points A and B lie on a circle with centre P. The point AQ has coordinates (1, -2) and M is the midpoint of AB with coordinates (3, 1).

a)Find an equation for the line 𝑙 through M and P

Given that the 𝑥 coordinate of P is 6,
b)Find the equation of the circle

I've answered part a but I don't know how to start part b. Please help! )
You are told the x coord of P so you can use part (a) to get the y coord - then find the radius.
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Faith&hardwork
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#3
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#3
(Original post by sdajiosfjai)
Name:  Screenshot 2021-10-24 143233.png
Views: 10
Size:  11.5 KB
Points A and B lie on a circle with centre P. The point AQ has coordinates (1, -2) and M is the midpoint of AB with coordinates (3, 1).

a)Find an equation for the line 𝑙 through M and P

Given that the 𝑥 coordinate of P is 6,
b)Find the equation of the circle

I've answered part a but I don't know how to start part b. Please help! )
Use the eqn of a straight line u got for a to find the y value
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