Math Problem Statement

Match the following equation with its graph: y = -3x + 1

Solution

The given equation is y=3x+1y = -3x + 1, which is in the slope-intercept form y=mx+by = mx + b, where:

  • m=3m = -3 is the slope, meaning the line goes down 3 units for every 1 unit to the right.
  • b=1b = 1 is the y-intercept, which is the point where the line crosses the y-axis.

To match the graph:

  1. The graph should have a y-intercept at (0,1)(0, 1).
  2. The slope should cause the line to decrease as xx increases (since the slope is negative).

Looking at the images, the correct graph will show a line crossing the y-axis at y=1y = 1 and sloping downwards.

Would you like further clarification on this or help with more details on graph interpretation?

Here are 5 relative questions:

  1. What does the slope of a line tell you about its direction?
  2. How do you identify the y-intercept in an equation?
  3. Can a line with a positive slope ever point downwards?
  4. How would the graph change if the slope was less steep (e.g., 1x-1x)?
  5. What if the y-intercept was negative instead of positive?

Tip: Always check both the slope and the y-intercept when matching a line equation to its graph!

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing

Formulas

Slope-Intercept Form: y = mx + b

Theorems

Line Equation Theorem

Suitable Grade Level

Grades 8-10