# Homework

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```					    Homework 12A2
• Define: TANGENT.
• Copy the 3 Yellow boxes on
pages 593, 595, & 596 into
• Finish Mixed Exercises 12-1
Drill 12A2
1. Which equation should be
used to solve for x?
a. 360 - (9x- 10)=90
b. 4x +10= 5x -20
x0
c. 4x +10= 5x +70
(3x+10)0
(5x-20)0
Drill 12A2
2. The shaded figure is the
State whether the mapping is a
reflection,
rotation,
translation,
glide reflection,
or dilation.
Homework 12A2
• Define: TANGENT.
• Copy the 3 Yellow boxes on
pages 593, 595, & 596 into
• Finish Mixed Exercises 12-1
Drill 12A2
1. Which equation should be
used to solve for x?
a. 360 - (9x- 10)=90
b. 4x +10= 5x -20
x0
c. 4x +10= 5x +70
(3x+10)0
(5x-20)0
Drill 12A2
2. The shaded figure is the
State whether the mapping is a
reflection,
rotation,
translation,
glide reflection,
or dilation.
Circles
Objective: The
student will write
and use the
equations of a
circle.
Graph the equation      It’s a
x 2+y2=25.          CIRCLE!
( 5, 0) ( 4,-3)
( 0, 5) ( 3,-4)
There are more
(-5, 0)(-3,-4) But it’s NOT.
coordinates.
( 0,-5) (-4,-3)
At this point
( 3, 4) (-4, 3)
it 3) (-3, 4)
( 4,looks like a
square.
Graph the equation
x 2+y2=16.
What happened
to the circle’s
did the number
after the = affect
circle?
Graph the equation
x 2+y2=9.
What happened
to the circle’s
did the number
after the = affect
circle?
Graph the equation
x 2+y2=4.
What happened
to the circle’s
did the number
after the = affect
circle?
Graph the equation
(x+2)  2+y2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Graph the equation
(x-2) 2+y2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Graph the equation
x 2+(y+2)2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Graph the equation
x 2+(y-2)2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Graph the equation
(x+3) 2+(y-2)2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Graph the equation
(x-1)  2+(y+2)2=25.
What happened
to the circle’s
center? How
did the number
in parentheses
affect the center
of the circle?
Write the equation
of the Circle
The center is at
(1,0), and the
the equation is
(x-1)2+(y-0)2=25
or (x-1)2+(y)2=25
Write the equation
of the Circle
The center is at
(2,1), and the
the equation is

(x-2) 2+(y-1)2=25
Write the equation
of the Circle
The center is at
(1,2), and the
the equation is

(x-1) 2+(y-2)2=16
Write the equation
of the Circle
The center is at
(-1,-2), and the
the equation is

(x+1) 2+(y+2)2=16
Write the equation
of the Circle
The center is at
(3,-2), and the
the equation is

(x-3) 2+(y+2)2=9
Mixed Exercises
problems on
worksheet 12-1 of
Now
Pack up and be ready to
leave when the tone
sounds.
DO NOT LEAVE YOUR
SEAT UNTIL THE TONE!

```
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