Asked by Kate
Find the equation of the line that passes through the points (1,4) and (2,-8).
Question options:
y = -3x + 9
y = 6x + 5
y = -12x + 16
y = 12x - 8 < this one is wrong..
I thought I had it right so how do I find the correct answer? i'm not getting any of the other answer choices.
Question options:
y = -3x + 9
y = 6x + 5
y = -12x + 16
y = 12x - 8 < this one is wrong..
I thought I had it right so how do I find the correct answer? i'm not getting any of the other answer choices.
Answers
Answered by
bobpursley
slope= (4+8)/(1-2)=-12
y=-12x+b
now put in either point into that .lets do the 1,4
4=-12*1+b
B=16
y=-12x+16
y=-12x+b
now put in either point into that .lets do the 1,4
4=-12*1+b
B=16
y=-12x+16
Answered by
Steve
Oops. You missed my typo. The slope is -12.
y-4 = -12(x-1)
y = -12x + 16
y-4 = -12(x-1)
y = -12x + 16
Answered by
Kate
Thanks Mr.Bob & Mr. Steve.. AGAIN.
I honestly need to practice this more obviously but 4 more months till graduation and everyone on here has been helping me since the 9th grade so it's a huge thank you.
I honestly need to practice this more obviously but 4 more months till graduation and everyone on here has been helping me since the 9th grade so it's a huge thank you.
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