Eighth grade 1. Checkpoint Proportional relationships Youve won new
Questions
answered
Anna and Rebecca are memorizing lines for an upcoming school play, Anna memorizes 16
lines every 2 days. This table shows how many lines Rebecca has memorized in total at
various times
5
Time
elapeed
Rebecca
Time (days) Lines
3
18
5
30
00
32
01
SmartScore
out of 100
6
36
Assuming Anna and Rebecca each memorize their lines at a constant rate, who memorizes
lines faster?
84
99
Anna
Rebecca
Neither; Anna and Rebecca memorize lines at the
same rate.
Submit

c.

step-by-step explanation:

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5