Most of the data value are the mean

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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.