Dè an caisead aig an loidhne dhìrich tro na puingean \(R(4,0)\) agus \(S( - 2,1)\)?
\[\frac{1}{6}\]
\[\frac{2}{3}\]
\[- \frac{1}{6}\]
Dè an caisead aig an loidhne dhìrich tro na puingean \(A(6,2)\) agus \(B(4, - 1)\)?
\[\frac{3}{2}\]
\[\frac{1}{2}\]
Obraich a-mach a' phuing-meadhain aig \(A( - 7,4)\) agus \(B(3, - 2)\).
\[( - 2,3)\]
\[( - 2,1)\]
\[( - 5,1)\]
Obraich a-mach co-aontar na loidhne dhìrich a tha co-shìnte ri \(2y = 3x - 7\) agus a' dol tro \((0.5, - 1)\).
\[4y = 6x - 7\]
\[4y = 6x + 7\]
\[2y = 6x - 5\]
Obraich a-mach an t-astar eadar \(A( - 2, - 3)\) agus \(B(3, - 4)\).
\[\sqrt {74}\]
\[\sqrt {26}\]
\[\sqrt {40}\]
Tha loidhne dhìreach a' dol tro na puingean A(-1, 3) agus B(k, 4) le caisead de \(\frac{5}{4}\) Dè an luach a th' aig k?
\[-\frac{1}{5}\]
\[\frac{1}{5}\]
\[\frac{9}{5}\]
Dè an caisead a th' aig an loidhne leis a' cho-aontar \(3y - 7x + 4 = 0\)?
\[- \frac{7}{3}\]
\[\frac{7}{3}\]
\[\frac{3}{7}\]
Dè an caisead a th' aig an loidhne leis a' cho-aontar \(3x + 2y = 5\)?
\[- \frac{2}{3}\]
\[\frac{5}{2}\]
\[- \frac{3}{2}\]
Ma tha loidhne ceart-cheàrnach ris an \(x\)-axis, dè an riochd anns am bi an co-aontar aice?
\(y = kx\) (Tha \(k\) na chunbhal)
\(y = k\) (Tha \(k\) na chunbhal)
\(x = k\) (Tha \(k\) na chunbhal)
Tha loidhne leis a' cho-aontar \(y = mx + c\) ceart-cheàrnach ri loidhne leis a' cho-aontar \(y = px + q\) ma tha:
\[p = - \frac{1}{m}\]
\[p = \frac{1}{m}\]
\[p = - m\]