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Mathematics 7 Online
OpenStudy (anonymous):

Below is a graph of a parent function (green) and a transformation (purple)

OpenStudy (anonymous):

a) What is the equation of the parent function? (green graph) b) What is the equation of the transformation? (purple graph) Explain your reasoning.

OpenStudy (anonymous):

Do you recognize what type of function creates this type of graph?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

@zonazoo

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

Then you have to familiarize yourself with these parent functions. When you see this type of graph, you have to know that it's y = sqrt(x)

jimthompson5910 (jim_thompson5910):

math>philosophy is correct, the parent function is f(x) = sqrt(x)

jimthompson5910 (jim_thompson5910):

you're shifting it 2 units (looks like 2 units anyway) to the right to get y = sqrt(x-2) then you're shifting it 6 units up to get y = sqrt(x-2) + 6 and i think you're also vertically stretching it (by a factor of 2?) to get y = 2*sqrt(x-2) + 6 ... not 100% sure on this part though

OpenStudy (anonymous):

so the equation for a parent function is f(x) = sqrt(x)

jimthompson5910 (jim_thompson5910):

yes or y = sqrt(x)

OpenStudy (anonymous):

kay what is an equation of the transformation?

jimthompson5910 (jim_thompson5910):

either y = sqrt(x-2) + 6 or y = 2*sqrt(x-2) + 6 since I'm not 100% sure if a vertical stretch is going on

jimthompson5910 (jim_thompson5910):

it's hard to say just by looking at the graph only

OpenStudy (anonymous):

Yea, there seems to be. If you draw a line across from the lower and upper points of each function, there is a vertical stretch

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