Math Problem Statement

what is the slope, y int, and x int of the equation: y=1+7x

Solution

To analyze the equation y=1+7xy = 1 + 7x, we can identify its slope, y-intercept, and x-intercept.

1. Slope

The equation y=1+7xy = 1 + 7x is in slope-intercept form y=mx+by = mx + b, where:

  • mm is the slope.
  • bb is the y-intercept.

In this case, m=7m = 7, so the slope is 77.

2. Y-intercept

The y-intercept is the point where the graph crosses the y-axis, which occurs when x=0x = 0.

Substitute x=0x = 0 into the equation: y=1+7(0)=1y = 1 + 7(0) = 1 Thus, the y-intercept is (0,1)(0, 1).

3. X-intercept

The x-intercept is the point where the graph crosses the x-axis, which occurs when y=0y = 0.

Set y=0y = 0 and solve for xx: 0=1+7x0 = 1 + 7x 7x=17x = -1 x=17x = -\frac{1}{7} Thus, the x-intercept is (17,0)\left( -\frac{1}{7}, 0 \right).

Summary:

  • Slope: 7
  • Y-intercept: (0,1)(0, 1)
  • X-intercept: (17,0)\left( -\frac{1}{7}, 0 \right)

Would you like more details or further clarification?


Here are 5 related questions to expand on this topic:

  1. How does the slope of a line affect its steepness?
  2. What happens if the slope is negative?
  3. Can you find the intercepts for y=23xy = 2 - 3x?
  4. How would you graph the equation y=1+7xy = 1 + 7x?
  5. How can you rewrite the equation y=1+7xy = 1 + 7x in standard form?

Tip: When finding intercepts, remember that the x-intercept occurs when y=0y = 0, and the y-intercept occurs when x=0x = 0.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

Slope-intercept form y = mx + b

Theorems

Intercept theorem

Suitable Grade Level

Grades 6-8