exam Maths Puzzle Numerical Ability

1.Linear relationships between two quantities can be described by an equation or a graph. Which do you think is the more informative? Why?

2) Find the slope of a straight line

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Problem #1

Due to popularity, you add 2 new buddies per week to your MSN buddy list. RIght now you have 13 buddies.

a) what is the slope ? What is the y-intercept? Shaquita average score on her first three math test is 77. she score 62 on the first test.On the third score, she score 9 more than she score on her second test. what did she score on the second and third test?