Slope, y intercept problem

hbtcutie92

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Apr 20, 2006
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A straight line with a slope of 5 containes points (1,2) and (3, k.) Find the value of k.

For this problem, do you use y= mx + b like
2= 5/1x + b
 
hbtcutie92 said:
A straight line with a slope of 5 containes points (1,2) and (3, k.) Find the value of k.

For this problem, do you use y= mx + b like
2= 5/1x + b
Why not just use the slope?

5 = (k-2)/(3-1) = (k-2)/2

You tell us if k = 12. No guessing. Know!
 
"5= 12-2/3-1 = 12-2/2=10/2=5 "

Nasty notation. Perhaps you mean 5 = (12-2)/(3-1) = (12-2)/2 = 10/2 = 5

"5 = 10/2+10/2"

What? I can't even guess what that might mean.

"10/2 = 5 "

This is good.

"5=5=5 "

Is there an echo in here?

Please notice that notation matters. You studied the "Order of Operations" for a reason. 12-2/3-1 = 36/3 - 2/3 - 3/3 = 31/3 Not all that close to 5.
 
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