Linear Simultaneous Equations - Substitution (AQA A-Level Mathematics): Quizzes

Rearranging one equation, then substituting

Replace $x$ with $y - 5$

$2y^2 - 10y + 16 = 0$

$y = 7$ or $y = 4$

$x = 2$

$(2, 7)$ and $(-1, 4)$

$4x^2 + 4x + 1 = 0$

$x = -\frac{1}{2}$

The line is tangent to the curve

A line that touches without cutting it