exam Maths Puzzle Numerical Ability

write the slope intercept form for an equation of the line perpendicular to the graph of the given equation and passing through the given point?
5y=-x+1, (2,-5)

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exam Other Question

points M, N, and X are collinear and X is between M and N. If MN=20 and the ratio between MX and NX is 2:3 what is the length of NX? I divid them into eachother Solve by clearing fractions
1/2y - 5 + 3/4y = 1/4 + 2y