Math Problem Statement

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

Solution

The problem asks for the equation of a line passing through the point (4,3)(-4, -3) and having a slope of 34-\frac{3}{4}.

To find the equation of the line, we can use the point-slope form of the line 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 the line passes through.

Here, the slope m=34m = -\frac{3}{4} and the point is (4,3)(-4, -3). Plugging in these values into the point-slope form:

y(3)=34(x(4))y - (-3) = -\frac{3}{4}(x - (-4))

Simplifying:

y+3=34(x+4)y + 3 = -\frac{3}{4}(x + 4)

Now, distribute the slope 34-\frac{3}{4}:

y+3=34x3y + 3 = -\frac{3}{4}x - 3

Finally, subtract 3 from both sides to get the equation in slope-intercept form:

y=34x6y = -\frac{3}{4}x - 6

So, the equation of the line is:

y=34x6y = -\frac{3}{4}x - 6

Would you like to dive deeper into any specific part of this process? Or do you have any further questions?


  1. How can you convert a linear equation from point-slope form to slope-intercept form?
  2. How do you calculate the slope of a line given two points?
  3. What does the slope of a line represent in real-world situations?
  4. What is the general form of the equation of a line, and how does it relate to the point-slope form?
  5. Can you explain how to graph a line given its equation?

Tip: Always remember to simplify and check your final equation, ensuring it matches the slope and point given in the problem!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

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