Question

.

Answer 1

for #2, going from y = x^2 to y = k*x^2 stretches the graph vertically by a factor of k

if k is negative, then you'll flip the graph over the x axis

Answer 2

k can be any constant

Answer 3

I'm just stating the general rule

Answer 4

for example, say we go from y = x^2 to y = 3x^2

k in this case is k = 3

Answer 5

so y = x^2 is being stretched vertically by a factor of 3

Answer 6

going from y = x^2 to y = (x-h)^2 shifts the graph h units to the right

if h is negative, then you're shifting |h| units to the left

Answer 7

y=(-3x)^2 is the same as y=9x^2 after you square each piece

Answer 8

correct

Answer 9

since h = 5

Answer 10

y=(-3x)^2 is the same as y=9x^2 after you square each piece

Answer 11

so #2 and #4 use the same basic rule

Answer 12

by a factor of _______

Answer 13

fill in the blank

Answer 14

9 actually since we're dealing with y = 9x^2

Answer 15

y=(-3x)^2 is equivalent to y=9x^2

Answer 16

yes

Answer 17

what do you have so far

Answer 18

x intercepts are of the form (x,0)

Answer 19

the vertex is an ordered pair

not a single point

Answer 20

you have your coordinates mixed up

Answer 21

(x,y) not (y,x)

Answer 22

vertex is really (-1,-3)

Answer 23

correct

Answer 24

x-intercepts are the points where the graph crosses the x axis

Answer 25

the y-intercept is the point where the graph crosses the y axis

Answer 26

x intercepts are of the form (x,0)

always

Answer 27

so if the graph crosses the x axis at 7, then (7,0) is one x-intercept

Answer 28

"axis of symmetry is -1?" correct

Answer 29

intercepts are (-3,0) and (1,0)

Answer 30

you made a typo on your second root

Answer 31

what is the y-intercept?

Answer 32

where does it cross the y axis?

Answer 33

look closer

Answer 34

the curve cutting across the vertical y axis

Answer 35

nope but close

Answer 36

yep -3 so the y intercept is (0,-3)

Answer 37

specifically

x-intercepts: (-3,0) and (1,0)
y-intercept: (0,-3)

Answer 38

I would point out which intercepts are what (are they x-intercepts? or y-intercepts?)

Answer 39

what do you mean?

Answer 40

I'm not sure either

Answer 41

I'm not that great at physics

Answer 42

when x = 0, what is y?

Answer 43

y=x^2-2x-3

y=(0)^2-2(0)-3 ... replace every x with 0

y = ???