Math Problem Statement

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Give the equation that has the indicated characteristics: a zero at 1, and a slope of 2. Enter the correct equation in the box.

Solution

We are asked to find an equation that satisfies the following conditions:

  • The independent variable is xx, and the dependent variable is yy.
  • The equation has a zero at x=1x = 1 (which means y=0y = 0 when x=1x = 1).
  • The slope of the line is 2.

This describes a linear equation in slope-intercept form, y=mx+by = mx + b, where:

  • mm is the slope.
  • bb is the y-intercept.

Step 1: Apply the slope

The slope is given as 22, so we start with the equation: y=2x+by = 2x + b

Step 2: Use the zero condition

We know that the equation has a zero at x=1x = 1, meaning y=0y = 0 when x=1x = 1. Substitute x=1x = 1 and y=0y = 0 into the equation: 0=2(1)+b0 = 2(1) + b 0=2+b0 = 2 + b Solving for bb, we get: b=2b = -2

Final Equation

Thus, the equation is: y=2x2y = 2x - 2

Would you like more details on this solution? Here are some follow-up questions:

  1. What is the general form of a linear equation, and how is it different from the slope-intercept form?
  2. How can you check if the solution is correct by plugging in different values for xx?
  3. How does the slope affect the steepness of the line?
  4. What are other forms of linear equations besides slope-intercept form?
  5. How would the equation change if the slope was negative instead of positive?

Tip: When solving for linear equations, always use the slope and a known point to quickly find the y-intercept.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Algebra

Formulas

Slope-Intercept Form: y = mx + b

Theorems

Linear equation theorem
Slope-intercept form properties

Suitable Grade Level

Grades 8-10