Math Problem Statement

Write an equation in point-slope form of the line that passes through the given point (-4, 1) and with the given slope m = 3.

Solution

The problem in the image asks for the equation of a line in point-slope form that passes through the point (4,1)(-4, 1) and has a slope m=3m = 3.

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

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

Where:

  • (x1,y1)(x_1, y_1) is a point on the line.
  • mm is the slope of the line.

In this case, we have:

  • x1=4x_1 = -4
  • y1=1y_1 = 1
  • m=3m = 3

Substitute these values into the point-slope form equation:

y1=3(x(4))y - 1 = 3(x - (-4))

Simplify the equation:

y1=3(x+4)y - 1 = 3(x + 4)

This is the equation of the line in point-slope form.

Would you like further details or have any other questions?

Here are 5 related questions for practice:

  1. How would the equation change if the slope were negative?
  2. What is the equation in slope-intercept form?
  3. How do you convert point-slope form to standard form?
  4. Can you find another point on this line using the equation?
  5. What happens to the line if the slope becomes zero?

Tip: In point-slope form, the signs of the coordinates of the point always reverse when substituted into the equation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Point-Slope Form

Formulas

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

Theorems

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Suitable Grade Level

Grade 8-10