Practice Problems (Junior Cert Mathematics): Flashcards

$\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

$\left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right)$

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$y - y_1 = m(x - x_1)$

$y = mx + c$

$5$ units

$(3.5, 5)$

$2$

$y = 2x$

$y = 3x - 2$

$\left(\frac{5}{3}, \frac{2}{3}\right)$

How steep it is

How far apart they are

The exact middle between two points

The point where they meet