The line represented by the equation 3x + 5y = 2 has a slope of negative StartFraction 3 Over 5 EndFraction.. Which shows the graph of this equation?

A coordinate plane with a line passing through (negative 5, negative 4), (0, negative 1), and (3, 1).

A coordinate plane with a line passing through (negative 1, 1) and (4, negative 2).

A coordinate plane with a line passing through (0, 1) and (3, negative 4).

A coordinate plane with a line passing through (0, negative 2) and (1, 0).

1 answer

To determine which graph corresponds to the equation \( 3x + 5y = 2 \), we need to find the slope and y-intercept of the line.

First, we can rearrange the equation into slope-intercept form (\( y = mx + b \)):

  1. Start with the original equation: \[ 3x + 5y = 2 \]

  2. Isolate \( y \) on one side: \[ 5y = -3x + 2 \]

  3. Divide every term by 5: \[ y = -\frac{3}{5}x + \frac{2}{5} \]

From this, we see that the slope \( m \) is \( -\frac{3}{5} \) and the y-intercept \( b \) is \( \frac{2}{5} \).

Now, let's analyze the given options:

  1. First option: A line passing through (negative 5, negative 4), (0, negative 1), and (3, 1).

    • Calculate the slope between the points (0, -1) and (3, 1): \[ m = \frac{1 - (-1)}{3 - 0} = \frac{2}{3} \]
    • This slope does not match \( -\frac{3}{5} \).
  2. Second option: A line passing through (negative 1, 1) and (4, negative 2).

    • Calculate the slope: \[ m = \frac{-2 - 1}{4 - (-1)} = \frac{-3}{5} \]
    • The slope matches \( -\frac{3}{5} \).
  3. Third option: A line passing through (0, 1) and (3, negative 4).

    • Calculate the slope: \[ m = \frac{-4 - 1}{3 - 0} = \frac{-5}{3} \]
    • This slope does not match \( -\frac{3}{5} \).
  4. Fourth option: A line passing through (0, negative 2) and (1, 0).

    • Calculate the slope: \[ m = \frac{0 - (-2)}{1 - 0} = \frac{2}{1} = 2 \]
    • This slope does not match \( -\frac{3}{5} \).

Conclusion

The only option that has a slope of \( -\frac{3}{5} \) is the second option, which shows the graph of the equation \( 3x + 5y = 2 \).

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