book Maths Puzzle Numerical Ability

graph the linear equality 4x+y<_-1

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book Other Question

DIRECT VARIATION
Find an equation of variation where y varies directly as x and y=2 when x=10 find y when x = -25.
y=____
Thanks you very much please help me.

solve for the indicated variable.
1. distance
solve for t: d=rt

i tryed: d/r=rt/r , t=d/r