exam Maths Puzzle Numerical Ability

What is the slope of the line passing through (-2,-3) and (2,-1)?

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exam Other Question

which of the following is a pattern for multiplying the sum and diffrence of the same terms, a + b

a. a2 + 2ab + b2
b. a2 + b2
c. a2 + ab + b2
d. a2 - b2 Tina used 1/3 of her bus tokens, then lost 3/4 of the rest. This left her with 3 tokens. How many did she start with?