A straight line passes through the points with coordinates (-1, -1), (3, 15) and (k, 23).
Work out the value of k.
You must show all your working.
Please help!

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

Given that abcd is a rhombus, what is the value of x?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.