Which equation could be used to create the graph?

Responses

y=x−2
y equals x minus 2

y=x−4
y equals x minus 4

y=x3
y equals x over 3

y=3x
y equals 3 x
A line graphed on a Coordinate plane with x axis ranging from 0 to 10 and y axis ranging from 0 to 10. The line passes through the points begin ordered pair 0 comma 0 end ordered pair comma begin ordered pair 9 comma 3 end ordered pair.

1 answer

To find the equation of the line that passes through the points (0, 0) and (9, 3), we first need to determine the slope (m) of the line. The slope can be calculated using the formula:

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

Using the points (0, 0) and (9, 3):

\[ m = \frac{3 - 0}{9 - 0} = \frac{3}{9} = \frac{1}{3} \]

Now we have the slope (m) of the line, which is \(\frac{1}{3}\). The equation of a line can be written in point-slope form as:

\[ y = mx + b \]

Since the line passes through the origin (0, 0), the y-intercept (b) is 0. Therefore, we can write the equation as:

\[ y = \frac{1}{3}x + 0 \]

This further simplifies to:

\[ y = \frac{1}{3}x \]

Looking at the provided responses:

  • \( y = x - 2 \)
  • \( y = x - 4 \)
  • \( y = x^3 \)
  • \( y = 3x \)

None of these equations match \( y = \frac{1}{3}x \). However, the closest to the one we derived is actually not present among the responses.

The correct equation should be:

\[ y = \frac{1}{3}x \]

If there is a misunderstanding of the options or details, please confirm and check for any adjustments needed.