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How would you solve this?

Guest Nov 19, 2018
 #1
avatar+92787 
+1

Slope = -5/2

Point (2,8)

 

We want the form    y = mx + b

Where m is the slope and b is the y intercept

 

So we have

 

y = (-5/2)(x - 2) + 8     simplify

 

y = (-5/2)x + 10/2 + 8

 

y = (-5/2)x + 5 + 8

 

y = (-5/2)x + 13

 

 

cool cool cool

CPhill  Nov 19, 2018
 #2
avatar
+1

Thank You!

laugh

Guest Nov 19, 2018
 #3
avatar+14578 
+2

Let's write this as

y = mx+b     and we know   2,8 is on the line (substitute these in to the equation)

8 = -5/2 (2) + b

8 = -5 + b               so b = 13 and the equation becomes

y = (-5/2) x + 13

ElectricPavlov  Nov 20, 2018

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