Math Problem Statement

Graph y = (5/3)x - 9.

Solution

It looks like you've provided a graph that is supposed to represent the equation y=53x9y = \frac{5}{3}x - 9, but the graph shown is incorrect. Let me explain why.

Correcting the Graph:

The equation y=53x9y = \frac{5}{3}x - 9 is a linear equation in slope-intercept form, where:

  • The slope m=53m = \frac{5}{3}
  • The y-intercept is b=9b = -9.

To graph this equation correctly:

  1. Start at the y-intercept: The point where the graph crosses the y-axis is (0,9)(0, -9).
  2. Use the slope to find another point: The slope 53\frac{5}{3} means that for every increase of 3 units in the xx-direction, the yy-value increases by 5 units. So, starting at (0,9)(0, -9), if you move 3 units to the right, you'll reach x=3x = 3, and the corresponding yy-value will be 9+5=4-9 + 5 = -4. Thus, the second point is (3,4)(3, -4).

Steps to plot:

  • First point: (0,9)(0, -9)
  • Second point: (3,4)(3, -4)
  • Connect the two points to draw the line.

The graph in the image is a horizontal line, which is incorrect because the slope should tilt upwards with a positive slope of 53\frac{5}{3}.

Would you like more details on how to graph this or a clarification on slope-intercept form?


Here are 5 related questions for further exploration:

  1. What does the slope 53\frac{5}{3} represent in practical terms for the graph?
  2. How would you find the x-intercept for the equation y=53x9y = \frac{5}{3}x - 9?
  3. What is the general effect of increasing the slope on the steepness of the line?
  4. How does changing the y-intercept affect the graph of a linear equation?
  5. How would the graph look if the slope were negative, such as y=53x9y = -\frac{5}{3}x - 9?

Tip:

When graphing lines, always check the slope and y-intercept carefully, and plot at least two points before drawing the line.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing Lines
Slope-Intercept Form

Formulas

y = mx + b

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10