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graph -5x + 3y = -15

0 votes

i dont a know how to put this on a graph

asked Dec 9, 2013 in GEOMETRY by johnkelly Apprentice

1 Answer

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Graph the linear equation by using slope-intercept method :

The equation -5x + 3y = -15.

Write the above equation in slope-intercept form y = mx + b, where m is slope and b is y-intercept.

Add 5x to each side.

-5x + 3y + 5x = -15 + 5x

3y = 5x - 15

Divide each side by 3.

3y/3 = 5x/3 - 15/3

y = (5/3)x - 5

Slope : m = 5/3 and y-intercept : b = -5.

y-intercept is -5, so the line crosses the y-axis at (0, -5)

Using slope find the next point.

Slope = rise/run = 5/3

Start at point (0, -5), move 3 units up (-5+5=0) and 3 units right (0+3=3), then plot the point (3, 0).

Draw a line through these points.

Graph :

graph for the equation - x - 2y = 8

 

answered Aug 19, 2014 by casacop Expert

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