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Jan 1, 2026

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Understanding Slope in Mathematics

𝒜𝓇𝓉𝓎_ℳ𝑜𝑜𝓃

@decemberart

Slope is a fundamental concept in math that measures the... Show more

slope
Definition
Slope: ratio of the vertical change (change in y-coordinates)
to the horizontal change (change in x-coordinates)
Formulas
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Understanding Slope

Slope is simply the ratio of vertical change to horizontal change in a line. Think of it as measuring how steep a hill is—the steeper the hill, the larger the slope value. Mathematically, we express slope using the formula: $m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{\Delta y}{\Delta x} = \frac{Rise}{Run}$

When finding slope from a graph, remember some simple rules: moving UP is positive rise, DOWN is negative; moving RIGHT is positive run, LEFT is negative. You just need to pick any two points on the line and apply the formula. For example, if you move up 2 units and right 3 units, the slope is $\frac{2}{3}$ .

Working with coordinate points requires the same approach. For points (3, -5) and (-7, 2), we calculate: $m = \frac{2 - (-5)}{-7 - 3} = \frac{7}{-10} = -\frac{7}{10}$ . This gives us a negative slope, indicating the line falls from left to right.

Try This! Look around you for real-world slopes—stairs, ramps, roofs. Estimate which ones have steeper slopes (larger values) and which have gentler slopes (smaller values).

Slopes come in four main types: positive (line rises from left to right), negative (line falls from left to right), zero (horizontal line), and undefined (vertical line). Each type tells you something important about the relationship between the variables the line represents.

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Algebra 1

•

Jan 1, 2026

•

1 page

Understanding Slope in Mathematics

𝒜𝓇𝓉𝓎_ℳ𝑜𝑜𝓃

@decemberart

Slope is a fundamental concept in math that measures the steepness of a line. It's the ratio between how much a line rises or falls vertically compared to how far it moves horizontally. Understanding slope is essential for graphing lines,... Show more

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Understanding Slope

Try This! Look around you for real-world slopes—stairs, ramps, roofs. Estimate which ones have steeper slopes (larger values) and which have gentler slopes (smaller values).