exam Maths Puzzle Numerical Ability

write an equation of the line that passes through each pair of points
#7
(5,1),(8,-2)

#9
(5,2),(-7,-4)

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exam Other Question

could someone help me with this?

Which of the following functions is an even function?
1. f(x)=4x-2
2. f(x)=/6x+8/
3. f(x)=3-x^2
4. f(x)=x/x+1
Add:


29+(-42)+510+(-397)+52(-792)
Help me please. I do not understand am i supposed to subtract all the ones in parenthisis then add the rest, then subtract the total parenthisis from the total of the ones not in parenthesis?