91Ó°ÊÓ

A line with slope passes through points (2, 3) and (10, ?).

Write an equation of the circle that has the given center and radius.

$C(−4,−7)\text{ â¶Ä‰â¶Ä‰};\text{ â¶Ä‰â¶Ä‰}r=5$.

Write an equation of the circle that has the given center and radius.

$C(−2,5)\text{ â¶Ä‰â¶Ä‰};\text{ â¶Ä‰â¶Ä‰}r=\frac{1}{3}$

A line with slope$−\frac{5}{2}$ passes through points (7, -4) and (?, 6).

Write an equation of the circle that has the given center and radius.

$C(−2,5)\text{ â¶Ä‰â¶Ä‰};\text{ â¶Ä‰â¶Ä‰}r=\frac{1}{3}$

Sketch the graph of

${\left(x−3\right)}^2+{\left(y+4\right)}^2=36$

A line with slope m passes through points (p, q) and (r, ?).

Sketch the graph of

${\left(x−2\right)}^2+{\left(y−5\right)}^2≤9$

a. Find the slopes of$\stackrel{¯}{OD}$and$\stackrel{¯}{NF}$.

b. Why is$\mathrm{Δ}OCDâ‰\dots \mathrm{Δ}NEF$?

c. Why is$∠DOCâ‰\dots ∠FNE$?

d. Why is$\stackrel{¯}{OD}âˆ\yen \stackrel{¯}{NF}$?

e. What do you think is true about the slopes of parallel lines?

Show that the triangle with vertices$A\left(−3,4\right),M\left(3,1\right),\text{and}Y\left(0,2\right)$is an isosceles triangle.