15.

Find the x- and y-intercept of the line.

5x – 4y = 40

1 answer

To find the x- and y-intercepts of the line given by the equation \(5x - 4y = 40\), we can follow these steps:

X-Intercept

The x-intercept occurs when \(y = 0\). We can find it by substituting \(y = 0\) into the equation:

\[ 5x - 4(0) = 40 \]

This simplifies to:

\[ 5x = 40 \]

Now, divide both sides by 5:

\[ x = 8 \]

So, the x-intercept is \((8, 0)\).

Y-Intercept

The y-intercept occurs when \(x = 0\). We can find it by substituting \(x = 0\) into the equation:

\[ 5(0) - 4y = 40 \]

This simplifies to:

\[ -4y = 40 \]

Now, divide both sides by -4:

\[ y = -10 \]

So, the y-intercept is \((0, -10)\).

Summary

  • X-Intercept: \((8, 0)\)
  • Y-Intercept: \((0, -10)\)