Because the x-intercept is 3 and the y-intercept is –4, the points (3, 0) and (0, –4) are on the line. What is the slope of the line?

A. −4/3

B. 4/3

C. 3/4

D. −3/4

5 answers

To find the slope of a line given two points, we can use the slope formula:

\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]

In this case, we have the points (3, 0) and (0, -4). Let's assign:

  • \((x_1, y_1) = (3, 0)\)
  • \((x_2, y_2) = (0, -4)\)

Now, substitute the values into the slope formula:

\[ m = \frac{-4 - 0}{0 - 3} \]

This simplifies to:

\[ m = \frac{-4}{-3} = \frac{4}{3} \]

So the slope of the line is:

\[ \boxed{\frac{4}{3}} \]

Thus, the correct answer is B. \( \frac{4}{3} \).

What are the x- and y-intercepts of the equation 3y−2x=18?

To find the x- and y-intercepts of the equation \(3y - 2x = 18\), we can set \(y = 0\) to find the x-intercept, and set \(x = 0\) to find the y-intercept.

Finding the x-intercept:

Set \(y = 0\):

\[ 3(0) - 2x = 18 \]

This simplifies to:

\[ -2x = 18 \]

Now, solve for \(x\):

\[ x = \frac{18}{-2} = -9 \]

So the x-intercept is \((-9, 0)\).

Finding the y-intercept:

Set \(x = 0\):

\[ 3y - 2(0) = 18 \]

This simplifies to:

\[ 3y = 18 \]

Now, solve for \(y\):

\[ y = \frac{18}{3} = 6 \]

So the y-intercept is \((0, 6)\).

Summary:

The x-intercept is \((-9, 0)\) and the y-intercept is \((0, 6)\).

What are the x- and y-intercepts of the equation 6y + 4x = 22?

To find the x- and y-intercepts of the equation \(6y + 4x = 22\), we'll follow the method of setting one variable to zero to find the other.

Finding the x-intercept:

Set \(y = 0\):

\[ 6(0) + 4x = 22 \]

This simplifies to:

\[ 4x = 22 \]

Now, solve for \(x\):

\[ x = \frac{22}{4} = \frac{11}{2} = 5.5 \]

So the x-intercept is \(\left(\frac{11}{2}, 0\right)\) or \((5.5, 0)\).

Finding the y-intercept:

Set \(x = 0\):

\[ 6y + 4(0) = 22 \]

This simplifies to:

\[ 6y = 22 \]

Now, solve for \(y\):

\[ y = \frac{22}{6} = \frac{11}{3} \]

So the y-intercept is \(\left(0, \frac{11}{3}\right)\) or \((0, 3.67)\) (approximately).

Summary:

  • The x-intercept is \(\left(\frac{11}{2}, 0\right)\) or \((5.5, 0)\).
  • The y-intercept is \(\left(0, \frac{11}{3}\right)\) or \((0, 3.67)\).