exam Maths Puzzle Numerical Ability

7x - 4y + 7 = 0

3x - 5y + 3 = 0

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exam Other Question

The slope of the line given by 4x - 3y = 11 is

a. 3/4
b. -3/4
c. 4/3
d. -4/3
e. none of these A store is selling Compact Discs (CDs)for $10.50 and $8.50. You buy 10 cds for $93. How many cds bought at each price?