exam Maths Puzzle Numerical Ability

1) y=x
y=-x

2)y=-x
y=x+9

i have 12 problems just like this, and the instuctions
in the book i dont get. pleezzz help thank you

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exam Other Question

how do i find the LCD for rational expressions and convert each rational expression into an equivalent rational expression w/LCD as the denominator how mant times greater is 5/6 of 30 than 1/6 0f 30

I think it is 4 as 1/6 of 30 is 5 so 5/6 would be 25, I am just unsure

i think this is the answer as 6/6 would be a whole

Alex