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Advent calendar 2021
23 December
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I draw the parabola \(y=x^2\) and mark points on the parabola at \(x=17\) and \(x=-6\). I then draw a straight line connecting these two points.
At which value of \(y\) does this line intercept the \(y\)-axis?
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The line will meet the \(y\)-axis at y=
102
.
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division
fractions
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tiling
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3d shapes
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books
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consecutive numbers
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algebra
averages
folding tube maps
colouring
cube numbers
perfect numbers
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angles
2d shapes
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square roots
square numbers
planes
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symmetry
differentiation
elections
cryptic clues
pentagons
geometric mean
floors
calculus
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logic
time
products
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median
menace
chess
hexagons
surds
sums
triangle numbers
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consecutive integers
sum to infinity
irreducible numbers
combinatorics
chocolate
range
taxicab geometry
balancing
clocks
the only crossnumber
matrices
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ave
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