The table below shows the total cost for purchasing a certain number of equally-priced concert tickets. Write an equation to describe the relationship between t, the number of tickets, and c, the total cost of tickets.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.