book Maths Puzzle Numerical Ability

Find the slope and y-intercept of the graph of:

7x+6y-30=0

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book Other Question

Find the measures of two supplementry andles , angle N and angle M if teh measures of angle N is 5 less than 4 times the measure of angle M Simplify each complex fraction. Reduce each answer to lowest terms.

1/3+1/y
________
y/3 - 3/y