Math Problem Statement

Rewrite y = 1/4x + 3, solving for x. What feature of the line can easily be found using the rearranged equation?

Solution

The problem shown asks to rewrite the equation y=14x+3y = \frac{1}{4}x + 3 by solving for xx, and then it inquires about which feature of the line can be found using the rearranged equation.

Let's first solve for xx.

Step 1: Start with the given equation:

y=14x+3y = \frac{1}{4}x + 3

Step 2: Subtract 3 from both sides:

y3=14xy - 3 = \frac{1}{4}x

Step 3: Multiply both sides by 4 to isolate xx:

4(y3)=x4(y - 3) = x

Thus, the rearranged equation is: x=4(y3)x = 4(y - 3)

Interpretation:

In this form, x=4(y3)x = 4(y - 3), the equation shows the relationship between xx and yy in terms of yy. From this, we can find the x-intercept more easily, as setting y=0y = 0 will give us the value of xx where the line crosses the x-axis.

Would you like a detailed explanation on the process of finding the x-intercept or any other feature of the line? Feel free to ask!

Here are five related questions to deepen understanding:

  1. What is the slope of the line in the original equation?
  2. How would you find the y-intercept from the original form of the equation?
  3. How does changing the slope affect the graph of the line?
  4. What happens to the x-intercept if the constant term in the original equation changes?
  5. How would you rearrange the equation to express yy in terms of xx if it were initially given in terms of xx?

Tip: The slope of a line can tell you how steep it is, while the intercepts give you key points where the line crosses the axes!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

y = mx + b
x = 4(y - 3)

Theorems

Slope-Intercept Form
X-Intercept

Suitable Grade Level

Grades 7-9