Look at the graph:

(0, 5), (3, 3), (6, 1)
What is the y-intercept? _____________
What is the slope? _____________
What is the equation of the line in slope-intercept form? ___________
This is a ___________ relationship
Options: y = 5x - 2, - 2/3, (-5, 0), (0, 5), - 5/3, y = - 2/3x + 5, 7, y = 2/3x + 5, non proportional, proportional, y = -32x + 5, (0, 0), y = 5x + 2/3, 0

1 answer

To determine the y-intercept, slope, and the equation of the line in slope-intercept form for the points (0, 5), (3, 3), and (6, 1), we can follow these steps:

  1. Y-Intercept: The y-intercept is the y-value when x is 0. From the point (0, 5), we see that the y-intercept is:

    • Y-Intercept = 5
  2. Slope: The slope (m) can be calculated using the formula: \[ m = \frac{y_2 - y_1}{x_2 - x_1} \] We can use any two points. Let's use (3, 3) and (0, 5): \[ m = \frac{3 - 5}{3 - 0} = \frac{-2}{3} \]

    Alternatively, using points (3, 3) and (6, 1): \[ m = \frac{1 - 3}{6 - 3} = \frac{-2}{3} \] So, the slope is:

    • Slope = -\frac{2}{3}
  3. Equation of the Line in Slope-Intercept Form: The slope-intercept form is given by: \[ y = mx + b \] Where \( m \) is the slope and \( b \) is the y-intercept. From our calculations:

    • Slope \( m = -\frac{2}{3} \)
    • Y-Intercept \( b = 5 \)

    Hence, the equation of the line is:

    • Equation = y = -\frac{2}{3}x + 5
  4. Type of Relationship: Since the points do not pass through the origin (0,0) and the slope is negative, the relationship is considered a:

    • Non-Proportional relationship

Putting everything together:

  • Y-Intercept: 5
  • Slope: -\frac{2}{3}
  • Equation: y = -\frac{2}{3}x + 5
  • Type of Relationship: Non-Proportional

Final Answers:

  • Y-Intercept: 5
  • Slope: -\frac{2}{3}
  • Equation: y = -\frac{2}{3}x + 5
  • This is a non-proportional relationship.