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 can first rearrange it into the slope-intercept form, which is \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept.

Starting from the original equation:

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

We can isolate \( y \) by first moving \( 9 + \frac{27}{2}x \) to the other side:

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

This simplifies to:

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

Next, we multiply the entire equation by \(-\frac{2}{3}\) to solve for \( y \):

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

Simplifying this gives:

\[ y = 6 + 9x \]

Now the equation is in the form \( y = mx + b \) where:

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

The y-intercept as an ordered pair (where \( y \) is equal to \( b \) and \( x \) is \( 0 \)) is \( (0, 6) \).

Thus, the answers are:

The slope is 9. The y-intercept is (0, 6).