book Maths Puzzle Numerical Ability

.....^
..../a
.../....
../......
./........
/bcd>

ignore the dots, they are filler to line everything up.
a) 5x-20
b) 2x+8
c) blank
d) 6x+

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book Other Question

Find an equation of the line through the point (4,5) and perpendicular to the line passing through the points (-1,3) and (2,9). when a symbol such as < or > is placed betweem two expressions.