Math Problem Statement

The points represented by the table lie on a line.

A table shows the different values of x for y. X values: Negative 9, negative 5, negative 1, 3. Y values: negative 2, 0, 2, 4.

What is the slope of the line?

Solution

To find the slope of the line that passes through the points given in the table, we use the slope formula:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

where (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) are two points on the line. Let's choose two points from the table, say (9,2)(-9, -2) and (5,0)(-5, 0).

Step 1: Calculate the slope

m=0(2)5(9)=24=12m = \frac{0 - (-2)}{-5 - (-9)} = \frac{2}{4} = \frac{1}{2}

The slope of the line is 12\frac{1}{2}.

Would you like to see a more detailed explanation or have any other questions?

Related Questions:

  1. How would the slope change if the points were different?
  2. What does a slope of 12\frac{1}{2} indicate about the line?
  3. Can you find the equation of the line using the slope and one point?
  4. What would the y-intercept of this line be?
  5. How can you determine if other points lie on this line?

Tip:

Remember, the slope represents the rate of change in yy for a unit change in xx. If the slope is positive, the line rises from left to right. If it’s negative, the line falls from left to right.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope of a Line

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)

Theorems

Linear relationship between two points
Slope formula

Suitable Grade Level

Grades 6-8