book Maths Puzzle Numerical Ability

Write the equation of each line. Give the answer in slope-intercept form.

The line through (-1, -@0 with slope 3/7

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book Other Question
For f(x)=1/x^2-2x-8 , find the interval(s) where f(x) < 0. solve by factoring.
1) x2-5x+6=0
2) 2x2-9x-5=0
3) 3x2+5x-2=0