exam Maths Puzzle Numerical Ability

A line goes through the points (5,-1) and (-6,4). Write the equation of the line in slope-intercept form and standard form.

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exam Other Question

Consider the arithmetic sequence; 2,7,12,17,22,.... what is the ordinal of the term 102? How do you solve equations like these?
Rules:Simplify but leave in radical form

1.) radical 20a^2
2.) radical 30a^7
3.) 5 radical 250

Please help
And thank you