exam Maths Puzzle Numerical Ability

will u please help me answer these questions i am having a test on it on Next Tuesday march 27,2007

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exam Other Question

A line is passing through the points (-1,1) adn (-2,-1).
What is the lope and what is the equation of the line and what are the x and y intercepts?
Please Solve the equation and show how to check the answer. thanks!

0.05(z+20)= 0.1z-0.5