Math Problem Statement

Write the equation of the line that contains the given point (-1, 4) and has the slope -3.

Solution

The problem asks to find the equation of a line passing through the point (1,4)(-1, 4) with a slope of 3-3.

We can use the point-slope form of a linear equation: yy1=m(xx1),y - y_1 = m(x - x_1), where (x1,y1)(x_1, y_1) is a point on the line and mm is the slope.

Step-by-step Solution:

  1. Substitute the given slope m=3m = -3 and the point (1,4)(-1, 4) into the formula: y4=3(x(1)).y - 4 = -3(x - (-1)).

  2. Simplify the double negative: y4=3(x+1).y - 4 = -3(x + 1).

  3. Distribute the slope 3-3: y4=3x3.y - 4 = -3x - 3.

  4. Add 4 to both sides to isolate yy: y=3x+1.y = -3x + 1.

Final Answer:

The equation of the line is: y=3x+1.y = -3x + 1.

Would you like further clarification on this solution or additional examples?


Related Questions:

  1. How do you convert the equation y=3x+1y = -3x + 1 into standard form Ax+By=CAx + By = C?
  2. What is the y-intercept of the equation y=3x+1y = -3x + 1?
  3. How do you find the x-intercept of the equation y=3x+1y = -3x + 1?
  4. How would you graph the line y=3x+1y = -3x + 1?
  5. What is the general form of a line, and how does it differ from point-slope form?

Tip:

When working with slope-intercept or point-slope forms, always double-check your slope (mm) and the substitution of points to avoid sign errors!

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Point-Slope Form
Slope-Intercept Form

Formulas

Point-slope form: y - y1 = m(x - x1)
Slope-intercept form: y = mx + b

Theorems

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Suitable Grade Level

Grades 8-10