mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

23 December

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?

Show answer

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

perimeter tournaments quadrilaterals complex numbers axes volume the only crossnumber polynomials sequences games hexagons logic lists digital products calculus money doubling expansions lines differentiation range dodecagons square numbers square roots functions chess crosswords wordplay symmetry matrices planes numbers elections partitions angles balancing sets perfect numbers consecutive integers algebra regular shapes cubics routes folding tube maps coins triangle numbers multiples pentagons 3d shapes arrows means multiplaction squares pascal's triangle rugby integration advent consecutive numbers geometric means median clocks people maths time books division dates chocolate percentages triangles probabilty averages even numbers gerrymandering grids medians area menace prime factors irreducible numbers cryptic clues scales addition colouring determinants factors chalkdust crossnumber parabolas cards indices palindromes ellipses rectangles crossnumbers mean circles tiling prime numbers combinatorics square grids cube numbers speed graphs decahedra dice polygons surds digital clocks spheres multiplication sum to infinity trigonometry coordinates taxicab geometry sport tangents fractions factorials digits squares albgebra binary neighbours remainders bases proportion geometry geometric mean ave shapes shape cryptic crossnumbers floors star numbers dominos christmas unit fractions sums xor probability number 2d shapes powers quadratics odd numbers integers products

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026