Math Problem Statement

which is the graph of the line y-2 = 3 (x-1)

Solution

The equation given is in point-slope form, which is:

y2=3(x1)y - 2 = 3(x - 1)

This can be rewritten in slope-intercept form (y=mx+by = mx + b) by expanding and simplifying the equation:

Step 1: Expand the equation

y2=3(x1)y - 2 = 3(x - 1) y2=3x3y - 2 = 3x - 3

Step 2: Isolate yy

y=3x3+2y = 3x - 3 + 2 y=3x1y = 3x - 1

So, the equation of the line is:

y=3x1y = 3x - 1

Key information:

  • Slope (m): 3
  • Y-intercept (b): -1

This means the line has a slope of 3, which indicates that for every 1 unit you move horizontally to the right, you move 3 units up vertically. The line crosses the y-axis at y=1y = -1.

Now, let's visualize this graph:

  • The line will pass through the point (1,2)(1, 2), which is the point given in the original equation (this is the point that satisfies the point-slope form).
  • The line has a steep upward slope because the slope is positive and greater than 1.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Point-Slope Form
Slope-Intercept Form

Formulas

Point-Slope Form: y - y1 = m(x - x1)
Slope-Intercept Form: y = mx + b

Theorems

Point-Slope Theorem
Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10