Dot 1 3,3

Dot 2 8,8

Use the graph to derive the equation y = mx for a line through the origin. Simplify the numerical coefficient, if needed

(1 point)

y = 8x
y = x
y = 3/3 x
y = 3x

1 answer

To derive the equation of a line in the form \(y = mx\) that passes through the origin (0, 0) and one of the given points, we need to calculate the slope \(m\).

Using the points provided:

  • Dot 1 = (3, 3)
  • Dot 2 = (8, 8)

We can find the slope \(m\) using either of the dots.

  1. For Dot 1 (3, 3): \[ m = \frac{y_1 - y_0}{x_1 - x_0} = \frac{3 - 0}{3 - 0} = \frac{3}{3} = 1 \]

Therefore, the equation for the line passing through the origin is: \[ y = 1x \quad \text{or simply} \quad y = x \]

  1. For Dot 2 (8, 8): \[ m = \frac{8 - 0}{8 - 0} = \frac{8}{8} = 1 \]

Again, the equation for the line passing through the origin is: \[ y = 1x \quad \text{or simply} \quad y = x \]

Thus, the simplified equation for the line through the origin is: \[ y = x \]

The correct answer from the options provided is: \[ \boxed{y = x} \]