Math Problem Statement

Instructions: Write the equation of the line graphed below in Point-Slope form. Use the point labeled on the graph. State the slope and point.

Equation:

Slope:

Point:

Instructions: Write the equation of the line graphed below in Point-Slope form. Use the point labeled on the graph. State the slope and point.

Solution

From the graph provided, we can determine the slope and point based on the labeled point and the line.

Point:

The labeled point on the graph is (2,2)(-2, 2).

Slope (m):

The slope mm is determined by the change in yy over the change in xx (rise over run).

  • From the graph, if we move from the point (2,2)(-2, 2) to the next convenient point on the line, say (0,3)(0, 3):
    • Rise (change in yy) = 32=13 - 2 = 1
    • Run (change in xx) = 0(2)=20 - (-2) = 2

So, the slope m=12m = \frac{1}{2}.

Equation in Point-Slope Form:

The point-slope form of a line is given by:

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

Using the point (2,2)(-2, 2) and the slope m=12m = \frac{1}{2}, we substitute into the equation:

y2=12(x+2)y - 2 = \frac{1}{2}(x + 2)

Summary:

  • Equation: y2=12(x+2)y - 2 = \frac{1}{2}(x + 2)
  • Slope: 12\frac{1}{2}
  • Point: (2,2)(-2, 2)

Would you like more details or further clarification on the process?

Here are five follow-up questions:

  1. How do we convert this equation into slope-intercept form?
  2. What is the y-intercept of this line?
  3. Can we write the equation in standard form?
  4. How do we find the x-intercept of this line?
  5. What happens to the slope if the line becomes vertical?

Tip: When working with slopes, remember that a positive slope means the line rises from left to right, while a negative slope means it falls from left to right.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Point-Slope Form

Formulas

Point-Slope form: y - y₁ = m(x - x₁)

Theorems

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

Suitable Grade Level

Grades 8-10