Identify the slope and the y-intercept of the equation 4x - 3y = 12.

A. The slope is 4, and the y-intercept is (0, 12).
B. The slope is 4/3, and the y-intercept is (0, -4).
C. The slope is 4/3, and the y-intercept is (0, 4).
D. The slope is -4/3, and the y-intercept is (0, 4).

1 answer

To find the slope and the y-intercept of the equation \(4x - 3y = 12\), we can rewrite the equation in slope-intercept form, which is \(y = mx + b\) where \(m\) is the slope and \(b\) is the y-intercept.

Starting with the equation:

\[ 4x - 3y = 12 \]

We want to solve for \(y\). First, isolate the term with \(y\):

\[ -3y = -4x + 12 \]

Next, divide every term by \(-3\):

\[ y = \frac{4}{3}x - 4 \]

Now that we have the equation in the form \(y = mx + b\):

  • The slope \(m\) is \(\frac{4}{3}\).
  • The y-intercept \(b\) is \(-4\), which corresponds to the point \((0, -4)\).

Thus, the correct answer is:

B. The slope is \( \frac{4}{3} \), and the y-intercept is \((0, -4)\).

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