Can I get some help on this answer? Will mark brainliest!

Answer/Step-by-step explanation:

Rob is incorrect because the graph line don't go trough the origin.

If the graph of a relationship is a line or a ray through the origin, then it is proportional. If it is a line or ray that does not pass through the origin, then it is not proportional. Also, if it is not linear, then it is not proportional.

Proportional relationships in mathematics occur when two variables always change by the same multiple. Proportional relationships use the model y = kx, where k is a constant multiplier that shows the relationship between x and y. The graph is a straight line that always passes through (0,0).

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.