What is the slope and the y-intercept of the equation 9 + 27/2x = -3/2y.

Write the y-intercept as an ordered pair.
The slope is __. The y-intercept is (__).

1 answer

To find the slope and the y-intercept of the equation \( 9 + \frac{27}{2}x = -\frac{3}{2}y \), we need to rearrange the equation into the slope-intercept form \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept.

Starting with the original equation:

\[ 9 + \frac{27}{2}x = -\frac{3}{2}y \]

First, we can isolate \( y \) by multiplying the entire equation by \(-\frac{2}{3}\) to eliminate the coefficient of \( y \):

\[ -\frac{2}{3}(9 + \frac{27}{2}x) = y \]

Now let's simplify the left side:

\[ y = -\frac{2}{3} \cdot 9 - \frac{2}{3} \cdot \frac{27}{2}x \]

Calculating each term:

\[ y = -6 - 9x \]

This can be rewritten in the standard \( y = mx + b \) form:

\[ y = -9x - 6 \]

From this equation, we can identify the slope \( m \) and the y-intercept \( b \):

  • The slope \( m \) is \(-9\).
  • The y-intercept \( b \) is \(-6\).

Finally, we express the y-intercept as an ordered pair. The y-intercept occurs at \( x = 0 \):

\[ (0, -6) \]

Therefore, the slope is \(-9\) and the y-intercept is \((0, -6)\).

Final answer: The slope is \(-9\). The y-intercept is \((0, -6)\).