Math Problem Statement

Graph the following lines 2π‘₯ = 𝑦 + 5

Solution

To graph the equation 2x=y+52x = y + 5, we first need to rewrite it in a more familiar form, such as the slope-intercept form y=mx+by = mx + b, where mm represents the slope and bb represents the y-intercept.

Step 1: Isolate yy in the given equation

Starting with: 2x=y+52x = y + 5 Subtract 5 from both sides: 2xβˆ’5=y2x - 5 = y Now we have: y=2xβˆ’5y = 2x - 5

Step 2: Analyze the equation

The equation y=2xβˆ’5y = 2x - 5 is in slope-intercept form, where:

  • The slope m=2m = 2
  • The y-intercept b=βˆ’5b = -5

This means the line passes through the point (0,βˆ’5)(0, -5) on the y-axis and has a slope of 2, meaning for every 1 unit you move to the right along the x-axis, the line moves up by 2 units.

Step 3: Plot the line

  1. Start by plotting the y-intercept (0,βˆ’5)(0, -5) on the graph.
  2. From this point, use the slope m=2m = 2. For each step of 1 unit to the right along the x-axis, move up 2 units on the y-axis.
  3. Draw a straight line through the points.

Would you like to see a graph of this line, or do you need help with something else related to it?

Follow-up questions:

  1. What would happen to the graph if the equation were y=βˆ’2xβˆ’5y = -2x - 5?
  2. How does the graph change if we add a constant to the x-term (e.g., y=2(xβˆ’3)βˆ’5y = 2(x - 3) - 5)?
  3. How do you graph the equation of a line when given two points, say (1,2)(1, 2) and (3,6)(3, 6)?
  4. How can we determine the equation of a line if we're given the slope and one point on the line?
  5. How does changing the slope value affect the steepness of the line?

Tip:

When graphing a line, always start with the y-intercept and then use the slope to plot additional points. This makes it easier to get an accurate representation of the line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope-intercept form: y = mx + b

Theorems

Equation of a line
Slope and y-intercept properties

Suitable Grade Level

Grades 7-9