Math Problem Statement

Determine the slope and the y-intercept from the table of values:

x y -2 10 0 6 1 4 3 0 5 -4

slope =

y-intercept =

Solution

To determine the slope and the y-intercept from the table of values, we'll first find the slope mm, using the formula for the slope between two points:

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

Let’s use the points (0,6)(0, 6) and (1,4)(1, 4):

m=4610=21=2m = \frac{4 - 6}{1 - 0} = \frac{-2}{1} = -2

So, the slope m=2m = -2.

Now, to find the y-intercept, we can use the slope-intercept form of a line y=mx+by = mx + b. Since we know the slope m=2m = -2, we can substitute one of the points from the table (for example, (0,6)(0, 6)) into the equation to find the y-intercept bb.

At x=0x = 0, y=6y = 6:

y=mx+b    6=2(0)+b    b=6y = mx + b \implies 6 = -2(0) + b \implies b = 6

Thus, the y-intercept is b=6b = 6.

Final Answer:

  • Slope = 2-2
  • Y-intercept = 66

Would you like further details or have any questions?

Here are some related questions to explore:

  1. How do you calculate the slope if given other pairs of points?
  2. What is the equation of the line based on this slope and y-intercept?
  3. How does the slope affect the steepness of the line?
  4. What happens to the y-intercept if the entire line shifts up or down?
  5. How can you use this information to graph the line?

Tip: The y-intercept is always the value of yy when x=0x = 0.

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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

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Suitable Grade Level

Grades 7-9