Math Problem Statement

Find the equation of the linear function represented by the table below in slope-intercept form.

Solution

Let's solve the given problem step-by-step to find the equation of the linear function in slope-intercept form y=mx+by = mx + b, where mm is the slope and bb is the y-intercept.

Step 1: Find the slope (mm)

The slope is calculated using the formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Using two points from the table, say (1,9)(1, 9) and (2,14)(2, 14): m=14921=51=5m = \frac{14 - 9}{2 - 1} = \frac{5}{1} = 5

Thus, the slope is m=5m = 5.


Step 2: Find the y-intercept (bb)

We now use the slope-intercept equation y=mx+by = mx + b and substitute one of the points (e.g., (1,9)(1, 9)) and m=5m = 5 to solve for bb.

y=mx+by = mx + b 9=5(1)+b9 = 5(1) + b 9=5+b9 = 5 + b b=4b = 4


Step 3: Write the equation

Now that we know m=5m = 5 and b=4b = 4, the equation of the linear function is: y=5x+4y = 5x + 4


Would you like further clarification or details about any step? Let me know!


Related Questions:

  1. How do you calculate the slope of a line using other points in the table?
  2. What is the meaning of the slope in a real-world scenario?
  3. How would the graph of y=5x+4y = 5x + 4 look? Can we plot it?
  4. What happens to the equation if the y-intercept bb changes?
  5. How can we check if all points in the table lie on the same line?

Tip:

Always use two points to calculate the slope, and verify the consistency of the linear function by checking other points!

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Math Problem Analysis

Mathematical Concepts

Linear Functions
Slope-Intercept Form
Algebra

Formulas

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

Theorems

Linear equation properties

Suitable Grade Level

Grades 6-8