Math Problem Statement

Find the rule for the table. Write your answer in y=mx+b form.

Solution

To find the rule in the form y=mx+by = mx + b, let's determine the slope mm and y-intercept bb for this relationship.

  1. Calculate the slope (m): The slope mm is given by the formula: m=y2y1x2x1m = \frac{{y_2 - y_1}}{{x_2 - x_1}}

    Using the points (0,5)(0, 5) and (3,11)(3, 11): m=11530=63=2m = \frac{11 - 5}{3 - 0} = \frac{6}{3} = 2

    So, m=2m = 2.

  2. Determine the y-intercept (b): Substitute m=2m = 2 and the point (0,5)(0, 5) into the equation y=mx+by = mx + b: 5=20+bb=55 = 2 \cdot 0 + b \Rightarrow b = 5

    Therefore, the equation is: y=2x+5y = 2x + 5

Final Answer: y=2x+5y = 2x + 5

Would you like further explanation on any step, or do you have any other questions?

Here are five related questions to deepen understanding:

  1. How do you find the equation of a line if given two points?
  2. What does the slope represent in the context of a linear equation?
  3. How would the equation change if the y-intercept was different?
  4. How can you verify that a point lies on the line described by a given equation?
  5. What is the difference between positive and negative slopes in linear equations?

Tip: To check your equation, substitute different xx values from the table and verify that they produce the corresponding yy values.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form

Formulas

y = mx + b
Slope formula: m = (y2 - y1) / (x2 - x1)

Theorems

Linear Function

Suitable Grade Level

Grades 6-8