Math Problem Statement

A line has a slope of 10 and passes through the point (5,-6). Find its equation.

Solution

To find the equation of a line with a given slope and a point through which it passes, we can use the point-slope form of a 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 a point on the line.

Given:

  • Slope m=10m = 10,
  • Point (x1,y1)=(5,6)(x_1, y_1) = (5, -6).

Substitute these values into the point-slope formula:

y(6)=10(x5)y - (-6) = 10(x - 5)

Simplifying:

y+6=10(x5)y + 6 = 10(x - 5)

Now, distribute the 10:

y+6=10x50y + 6 = 10x - 50

Finally, solve for yy (subtract 6 from both sides):

y=10x506y = 10x - 50 - 6

y=10x56y = 10x - 56

Thus, the equation of the line is:

y=10x56y = 10x - 56

Let me know if you'd like more details or have any questions!

Here are 5 related questions to expand on this concept:

  1. How would the equation change if the slope were negative?
  2. Can you find the equation of a line parallel to this one but passing through a different point?
  3. How do you convert the equation of a line from point-slope form to slope-intercept form?
  4. What is the equation of a line perpendicular to this one that passes through (5,6)(5, -6)?
  5. How can you find the x-intercept and y-intercept from the equation y=10x56y = 10x - 56?

Tip: Always double-check if the point provided satisfies the final equation to verify the accuracy of your solution!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Point-Slope Form

Formulas

y - y1 = m(x - x1)
y = mx + b

Theorems

Point-Slope Theorem
Slope-Intercept Form

Suitable Grade Level

Grades 8-10