Math Problem Statement

What is the equation in point-slope form of the line that passes through the point (-1, -4) and has a slope of -3?

Solution

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

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

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

Where:

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

Given:

  • Slope m=3m = -3,
  • Point (x1,y1)=(1,4)(x_1, y_1) = (-1, -4).

Substituting these values into the point-slope form:

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

Simplifying the equation:

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

Therefore, the correct equation is:

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

Now, looking at the provided boxes in the image, the correct order of numbers, symbols, and variables to fill in is:

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

Do you need more details or have any questions on this?

Here are some related questions you might find helpful:

  1. How do you convert a point-slope equation to slope-intercept form?
  2. Can you find the y-intercept from the point-slope form?
  3. How do you calculate the slope if given two points?
  4. What are other forms of a linear equation?
  5. How would the equation change if the slope were positive instead of negative?

Tip: When using the point-slope form, always check that you are correctly substituting both the slope and the point coordinates in their appropriate places!

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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

Point-slope form theorem for lines

Suitable Grade Level

Grades 8-10