Mathematics

Mathematics

Problem

For the hyperbola x225−y29=1\dfrac{x^{2}}{25}-\dfrac{y^{2}}{9}=1, the slopes of the asymptotes are a) ±45\pm\dfrac{4}{5} b) ±53\pm\dfrac{5}{3} c) ±35\pm\dfrac{3}{5} d) ±925\pm\dfrac{9}{25}
Intuitive explanation

The asymptotes of a hyperbola reveal the "ultimate direction" the curve heads toward as you move far from the center. For a hyperbola in standard form x2a2−y2b2=1\frac{x^2}{a^2} - \frac{y^2}{b^2} = 1, the asymptotes come from setting the equation equal to zero instead of 1—this gives you the pair of lines the hyperbola approaches. The slopes are simply ±ba\pm\frac{b}{a}, the ratio of the vertical and horizontal scale factors.

Intuitive explanation

The asymptotes of a hyperbola reveal the "ultimate direction" the curve heads toward as you move far from the center. For a hyperbola in standard form x2a2−y2b2=1\frac{x^2}{a^2} - \frac{y^2}{b^2} = 1, the asymptotes come from setting the equation equal to zero instead of 1—this gives you the pair of lines the hyperbola approaches. The slopes are simply ±ba\pm\frac{b}{a}, the ratio of the vertical and horizontal scale factors.

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