Math Problem Statement

Find the equation of the line given the following conditions.

  1. Slope = 2, passing through (3, 5)
Find the equation of the line given the following conditions. 4. Slope = 2, passing through (3, 5)

Solution

To find the equation of a line given the slope and a point through which it passes, we use the point-slope form of a line's equation:

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

Where:

  • mm is the slope,
  • (x1,y1)(x_1, y_1) is the point through which the line passes.

Given:

  • Slope m=2m = 2,
  • Point (x1,y1)=(3,5)(x_1, y_1) = (3, 5).

Substituting these values into the point-slope formula:

y5=2(x3)y - 5 = 2(x - 3)

Now, let's simplify this equation:

y5=2x6y - 5 = 2x - 6

Add 5 to both sides:

y=2x1y = 2x - 1

Thus, the equation of the line is:

y=2x1y = 2x - 1

Would you like further details or clarification?


Here are 5 related questions for further exploration:

  1. How can we rewrite the equation of a line in standard form?
  2. What is the y-intercept of the line from this equation?
  3. How would the equation change if the slope were negative?
  4. Can you find the equation of a line parallel to this one but passing through a different point?
  5. How can you verify if a point lies on this line?

Tip: The point-slope form is particularly useful when you know a point and the slope of the line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

Point-slope form: y - y1 = m(x - x1)

Theorems

Slope-intercept form

Suitable Grade Level

Grades 8-10