exam Maths Puzzle Numerical Ability

(a) Draw a scatter plot for the ordered pairs given in the table below.
(b) Then describe the nature of the correlation
X 0 2 3 4 5 6 8
Y 1 2 2 4 3 4 6

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exam Other Question

For f(x) = 1/x^2 -2x -8, find the interval(s) where f(x) < 0.

possible answers:
(-4,2)
(-2,4)
(2,4)
(2,8)

Pleeze show me. Thank you. The direct distance between city A and city B is 200 miles. The direct distance between city B and city C is 300 miles. Which could be the direct distance city C and city A?

A) 550 miles
B) 650 miles
C) 50 miles
D) 350 miles