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Find the Slope of the Line

by Omar Ibrahim
(Opelousas La)











































Find the Slope of the Line

Y=-12x+15

The equation is in the slope-intercept format.

Read the slope directly from the equation.

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Oct 04, 2011
Slope of a Linear Equation
by: Staff


Question:

by Omar Ibrahim
(Opelousas La)


Y = -12x + 15


Answer:

Your equation is already in the slope-intercept format.

The slope can be read directly from the equation. It is the coefficient of the x variable.

Slope = -12

The final answer is: Slope = -12




You can also compute a table of values to compute the slope.

Y = -12x + 15


If x = 0, y = -12 * 0 + 15 = 15

If x = 1, y = -12 * 1 + 15 = -12 + 15 = 3

The slope can be computed from these two x,y values:

(x, y)

(0, 15)
(1, 3)

slope = “rise” over “run”, or “rise” DIVIDED BY “run”

slope = (change in “y” values)/(change in “x” values)

slope = (y₂ - y₁)/(x₂ - x₁)


The x-y coordinates of the two points are: (0, 15) and (1, 3).


The slope will be calculated as the change of “y” when x increases. In this case “x” will increase from 0 to 1 (left to right).

slope = (y₂ - y₁)/(x₂ - x₁)

slope = (3 - 15)/( 1 - 0)

slope = (-12)/( 1)

slope = -12




Thanks for writing.

Staff
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