Q:

Given h(x) = |x + 2| βˆ’ 3 and ????(x) = βˆ’|x| + 4:a. Describe how to obtain the graph of ???? from the graph of a(x) = |x| using transformations.b. Describe how to obtain the graph of h from the graph of a(x) = |x| using transformations.

Accepted Solution

A:
Answer:a) First translating the graph of a along the x axis towards -2, and then along the y axis towards -3b)First we have to reflect the graph along the x axis and then translate it along thw y axis towards 4 Step-by-step explanation:Hi!I will consider that ???? stands for g, so we have the fucntions:h(x) = |x + 2| βˆ’ 3 g(x) = βˆ’|x| + 4a)We can see that h(x) = a(x+2) - 3this means that we have to do two translations to get from the graph of a(x) to the graph of h(x).the first one must occur along the x axis, where will the vertex be? we can figure this out looking for the point at which a(x+2) = 0, this point is x=-2, therefore, the first translation will be along the x axis towards -2.The second translation is along the y axis, and the length of the translation is given evaluating h(x) at the point where a(x+2) vanishes, that is x=-2h(-2) = -3Therefore, the second translation will be along the y axis towards -3.At the end, we will have the same a(x) graph but with its vertex at (-2,-3)b)here we can see that:g(x) = -a(x) + 4The minus sign multiplying a(x), indicates us that the graph must be reflected along the x axis, that is, insted of ''opening'' upwards, it will ''open'' downwards, the second tranformation is a translation along the y axis, and similar to the previous case, the point will be given when a(x)=0, that is:g(0) = 4 therefore, the graph must be translated along the y axis towards y = 4