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For the function rule y = -2x - 3, provide the x-y coordinates of the y-intercept and the x-intercept. Show your work.

 Jan 4, 2017
 #1
avatar+355 
+5

X-int is when y = 0

0 = -2x - 3

3 = -2x

x = -3/2

 

y - int is when x = 0

 

y = -3

 

(x-int)x = -3/2 and (y - int)y = -3

 Jan 4, 2017
 #2
avatar+128408 
0

y = -2x - 3

 

For the y intercept....let x  = 0

 

 y = -2(0) - 3   =  -3

 

For the x intercept....let  y  = 0

 

0 = -2x - 3      add 3 to both sides

 

3  = -2x     divide both sides by -2

 

-3/2   = x

 

Here's a graph :  https://www.desmos.com/calculator/0viv4anjxt

 

 

 

 

cool cool cool

 Jan 4, 2017

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