Math Problem Statement

Use the dot tool to plot the x- and y-intercepts, and then the line tool to graph a line based on those two points. 4x - 5y = -20

Solution

The equation given in the image is:

4x5y=204x - 5y = -20

We are asked to plot the xx- and yy-intercepts and then graph the line. Let's find these intercepts.

  1. To find the xx-intercept, set y=0y = 0 in the equation: 4x5(0)=20    4x=20    x=54x - 5(0) = -20 \implies 4x = -20 \implies x = -5 So, the xx-intercept is at (5,0)(-5, 0).

  2. To find the yy-intercept, set x=0x = 0 in the equation: 4(0)5y=20    5y=20    y=44(0) - 5y = -20 \implies -5y = -20 \implies y = 4 So, the yy-intercept is at (0,4)(0, 4).

Now, using these points (5,0)(-5, 0) and (0,4)(0, 4), you can draw the line on the graph.

Would you like more details on how to graph it, or do you have any other questions?

Here are some relative questions for practice:

  1. How would the graph change if the equation was 4x5y=204x - 5y = 20?
  2. What is the slope of the line in this problem?
  3. How do you convert this equation to slope-intercept form?
  4. What are the coordinates of another point on this line?
  5. How would you determine if a point lies on this line?

Tip: When graphing lines, always remember to label the intercepts clearly, as they are key reference points.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Graphing
Intercepts

Formulas

x-intercept: set y = 0
y-intercept: set x = 0

Theorems

Linear Equation Theory

Suitable Grade Level

Grades 9-12