exam Maths Puzzle Numerical Ability

plot intercepts to graph equation: x+y=5
plot intercepts to graph equation: 6x-4y=-12

graph linear equations: f(x)=4x+2
graph linear equations: f(x)=2x+6

thanks.

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exam Other Question

This is asking to find the distance between (6,0)and (-7,0)

I am getting stuck on the first step, how do bracket (0,0)?
please help Multiply. (-1/10) (40)
This problem the -1/10 are in "longer" parenthesis's. Am not sure what they are called but they are not {[ help