+0  
 
0
256
1
avatar

Identify the slopes and y-intercepts of the linear equations below:

a) y=-2x-8

b) y=3

c) x=9

d) y=x

e) 2x+3y=5

Guest Jul 25, 2017
 #1
avatar+87303 
+2

a) y= -2x-8

Slope = -2

y intercept  =  -2(0) - 8  =    -8

x intercept   ....set y to 0  ....   0  = -2x  - 8    add 8 to both sides .....   8  = -2x    divide both sdes by -2

x  = -4

 

b) y=3

Slope = 0

y intercept  = 3

No x intercept

 

c) x=9

slope = undefined

no y interceprt

x intercept = 9

 

 

d) y=x

Slope  = 1

x intercept, intercept  = 0

 

 

e) 2x+3y=5   get y by itself  ...   subtract 2x ffrom both sides    ......3y = -2x + 5  ....divide both sides by 3

y  = (-2/3)x  + 5/3

 

Slope  = (-2/3)

y intercept =  5/3

x intercept   .....2x + 3(0)  = 5    ........2x  = 5   ...... divide both sides by 2......x  = 5/2

 

 

 

cool cool cool

CPhill  Jul 25, 2017

17 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.