The graph of is shown below. Assume the domain of
is
and that the vertical spacing of grid lines is the same as the horizontal spacing of grid lines.
Part (a): The points and
are on the graph of
Find
and
Part (b): Find the graph of Verify that your points from part (a) are on the graph.
Part (c): The points and
are on the graph of
Find
and
Part (d): Find the graph of Be sure to verify that your points from part (c) are on the graph both algebraically and geometrically.
hints:
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Please use graphs in your explanation. and explain thoroughly. Thank you so much!
For the graph shown, each box has a width and height of 1.
The graph of f(2x) would be identical to the graph of f(x) if you change the scale on the x-axis, so that the width of each box would be ½ (but keep the height the same as it was).
a) On the original graph, there is the point (-4, 4). On the graph of f(2x), the coordinates of the point are (-2,4), so a = -2.
On the original graph, there is the point (4, -4). On the graph of f(2x), the coordinates of the point are (2, -4), so b = 2.
b) See the note above part a.
c) f(2x - 8) = f( 2(x - 4) ) This graph makes a horizontal shift of the graph of f(2x) 4 spaces to the right. The graph of f(2x - 8), which is f( 2(x - 4) ), is congruent to the graph of f(2x), just move it 4 spaces to the right.
Moving (-2,4) four spaces to the right creates (2,4), so c = 2.
Moving (2,-4) four spaces to the right creates (6, -4), so d = 6.
d) Draw the graph of f(2x), then move that graph 4 spaces to the right to create f(2x - 8).
This is the forth or fifth time this has been posted. It has been answered at least 3 times in full !
I first answered it a few days ago. I think I even put it in my End of Day Wrap!
Are you losing track of your posts.
If you become a member they will be stored automatically in your watchlist!!