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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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Advent calendar 2023
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List of all puzzles
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unit fractions
crosswords
functions
rectangles
indices
combinatorics
triangle numbers
people maths
consecutive integers
cryptic clues
regular shapes
taxicab geometry
polynomials
parabolas
even numbers
games
range
dice
gerrymandering
perimeter
clocks
percentages
speed
integration
circles
ellipses
wordplay
binary
graphs
doubling
means
palindromes
remainders
perfect numbers
irreducible numbers
matrices
advent
decahedra
folding tube maps
albgebra
volume
ave
balancing
partitions
coordinates
bases
differentiation
dates
fractions
area
factors
sets
shapes
proportion
digits
scales
dominos
crossnumbers
trigonometry
cards
dodecagons
probabilty
addition
elections
arrows
tiling
cubics
books
median
geometry
3d shapes
colouring
multiplication
rugby
averages
sums
crossnumber
prime numbers
quadratics
integers
menace
symmetry
factorials
routes
multiples
algebra
angles
christmas
numbers
chess
tournaments
the only crossnumber
sequences
quadrilaterals
geometric mean
odd numbers
cryptic crossnumbers
hexagons
number
consecutive numbers
axes
sport
pentagons
expansions
time
probability
squares
determinants
money
star numbers
lines
shape
pascal's triangle
coins
logic
spheres
square roots
planes
cube numbers
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mean
square numbers
complex numbers
grids
surds
digital clocks
products
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sum to infinity
tangents
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