Use symmetry to graph the inverse of the function.

The correct option is a.

Step-by-step explanation:

If a function is defined as

then the inverse of the function is

We know that the graph of a function and its inverse function symmetrical about the line y=x.

Draw the line of symmetry x=y in each of the given graph.

From the below figure it is clear that only graph 1 is symmetrical about the line y=x.

Therefore the correct option is a.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

i am not sure :

step-by-step explanation: