12 less than the quotient of a number and seven is negative two find the number

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Find the value of the variable and the length of each chord for #5 and #6.

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).