Math Problem Statement

Write the linear equation that gives the rule for this table. | x | y | |----|----| | 3 | 58 | | 4 | 65 | | 5 | 72 | | 6 | 79 | Write your answer as an equation with y first, followed by an equals sign.

Solution

To find the linear equation that gives the rule for the table, we need to calculate the slope and then determine the y-intercept.

The table provided shows:

xy
358
465
572
679

Step 1: Find the Slope (m)

The slope mm of a line is calculated using the formula:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Let's use the points (3, 58) and (4, 65):

m=655843=71=7m = \frac{65 - 58}{4 - 3} = \frac{7}{1} = 7

The slope is m=7m = 7.

Step 2: Find the Y-intercept (b)

The slope-intercept form of a linear equation is:

y=mx+by = mx + b

Now, using the point (3, 58) and the slope m=7m = 7, we substitute into the equation to find bb:

58=7(3)+b58 = 7(3) + b 58=21+b58 = 21 + b b=5821=37b = 58 - 21 = 37

Final Equation:

Thus, the equation of the line is:

y=7x+37y = 7x + 37

You can enter this equation as the answer.

Would you like more details or have any questions? Here are some related questions to consider:

  1. How do you find the slope between two points?
  2. What are the steps to derive the slope-intercept form of a line?
  3. Can you explain how to verify a point fits into an equation?
  4. What does the slope represent in a real-world context?
  5. How do we interpret the y-intercept in this situation?

Tip: Always recheck the calculation by plugging a few points from the table into the equation to make sure it holds true.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

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

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 7-9