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What is the y−coordinate of the y−intercept of the line that passes through the points (−4, −4) and (4, 8)?
The only question im stuck on PLEASE HELP! :)
 one year ago
 one year ago
What is the y−coordinate of the y−intercept of the line that passes through the points (−4, −4) and (4, 8)? The only question im stuck on PLEASE HELP! :)
 one year ago
 one year ago

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precalBest ResponseYou've already chosen the best response.0
figure out the slope then use y=mx+b and sub the slope for m and use one of the points for (x,y) to solve for b. b is our answer
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
Is there anyway you could start the equation of for me?
 one year ago

precalBest ResponseYou've already chosen the best response.0
dw:1358369271960:dwtell me what the slope is first
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
the slope would be M right but where am I looking for the slope for with the fraction?
 one year ago

precalBest ResponseYou've already chosen the best response.0
you need the slope to be able to use it in y=mx+b then you can use one of the points I would use (4,8) x=4 y=8 then you are solving for b. b is known as your y intercept and that is what you are looking for
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
So I have so far y= ? + 8 Would I plug in the 4?
 one year ago

precalBest ResponseYou've already chosen the best response.0
dw:1358370299889:dwyou need the slope to sub the m value and solve for b
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
Alright so what operation would I do from here?
 one year ago

CarolinBest ResponseYou've already chosen the best response.1
next, u can just substitute the M = gradient = slope into this equations to find value b
 one year ago

CarolinBest ResponseYou've already chosen the best response.1
then, rewrite the equation form in y = mx + b
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
Whats the value for m?
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
im so confused on what to do I might just guess lbvs...
 one year ago

CarolinBest ResponseYou've already chosen the best response.1
y = mx + b 8 = (3/2)(4) + b 8 = 6 + b b = 8 6 = 2 then, rewrite the equation: y = mx + b y = 3/2 x + 2 That the final answer
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
Oh you times by 4 DURR! Thank you so much I really appreciate it that makes so much more sense! Thank you again :)
 one year ago

ErinWeeksBest ResponseYou've already chosen the best response.0
so y=3/2x+2 is my answer?
 one year ago
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