The curve C C\,C has parametric equations
x=4t+2t+1y=t−3t+10≤t≤4 x = \frac{4t + 2}{t + 1} \quad y = \frac{t - 3}{t + 1} \quad 0 \leq t \leq 4 x=t+14t+2y=t+1t−30≤t≤4Show that C C\,C is part of a straight line.
Find the length of the line segment.
143 exam-style questions on OCR A Level Maths 1.3 Coordinate Geometry in the x-y Plane, covering 1.3.1 Straight lines, 1.3.2 Parallel and perpendicular lines, 1.3.3 Straight line models, 1.3.4 Coordinate geometry of a circle, 1.3.5 Centre and radius by completing the square, 1.3.6 Circle properties, 1.3.7 Parametric equations of curves (A-level only), 1.3.8 Parametric equations in context (A-level only), and 1.3 Coordinate Geometry in the x-y Plane. Each one has a worked solution and a mark scheme showing where the marks go.