Math Problem Statement

Use the labeled point to write a point-slope form for the line.

Solution

The image provides a graph showing a line that passes through the point (1,3)(-1, 3). To write the point-slope form of the equation, we need two things:

  1. A point on the line, which is given as (1,3)(-1, 3).
  2. The slope mm of the line.

From the graph, we can determine the slope mm by calculating the rise over run. Looking at the line, it drops by 1 unit vertically (rise = 1-1) and moves 1 unit horizontally to the right (run = 1). So, the slope m=11=1m = \frac{-1}{1} = -1.

Now, the point-slope form of a line is given by the equation:

yy1=m(xx1)y - y_1 = m(x - x_1)

Substituting the point (1,3)(-1, 3) and the slope m=1m = -1, the equation becomes:

y3=1(x+1)y - 3 = -1(x + 1)

This is the point-slope form for the line.

Would you like more details on this or have any questions?

Here are 5 related questions to deepen your understanding:

  1. How do you convert a point-slope equation to slope-intercept form?
  2. What is the general form of a linear equation?
  3. How do you find the slope of a line given two points?
  4. Can the point-slope form be used to write the equation of vertical lines?
  5. How do you determine the y-intercept from the point-slope form?

Tip: Point-slope form is especially useful when you know a point on the line and the slope but not the y-intercept.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Point-Slope Form
Slope

Formulas

y - y1 = m(x - x1)
Slope = rise/run

Theorems

Point-Slope Equation Theorem

Suitable Grade Level

Grades 8-10