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Mathematics 20 Online
OpenStudy (anonymous):

CAN SOMEONE HELP ME PLEASE?!?

OpenStudy (anonymous):

Transformations question!

OpenStudy (zehanz):

Change the formula by dividing by 2: \(y=\frac{1}{2}f(3x-6)-1\). Now, to draw the graph: 1. pick a number x, say x=0. 2. Calculate 3x-6, so that is -6 in this case. 3. Look up f(-6) in the given graph. It is 2. 4. Multiply with ½ and then subtract 1. Result: 0 You now have found that (0, 0) is on the graph. Plot it. Return to step 1, taking another number for x.

OpenStudy (zehanz):

You could also do it a little more sophisticated: Take f(3x-6)=f(3(x-2)). This means: move the graph of f 2 units to the right, then multiply with respect to the y-axis with 1/3 (distance of every point to the y-axis is divided by 3). Then there is the factor ½. This means: multiply with respect to the x-axis with ½, so the distance to the x-axis of every point halves. At last, move down the graph 1 unit. I have attached a drawing with a graph for every step. f is the original function, g, h and j are the intermediate steps, k (the red one) is the end result. Hope you understand what I did :)

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