Given the equation y − 3 = 1/2(x + 6) in point-slope form, identify the equation of the same line in standard form. Can someone please help me?
solve for \(y\) using the following steps 1) distribute the \(\frac{1}{2}\) on the right 2) add 3 to both sides
I got x-2y= -12
oh i should learn to read, hold on
yes, you are right my instructions were wrong good work!
Thank you! Can you help me with one more?
sure
not that i actually helped you with that one this time i will try to be more careful
I try my hardest lol, sometimes I just get stumped, ok, here it goes.
Choose the point-slope form of the equation below that represents the line that passes through the point (6, −3) and has a slope of 1/2.
I am copying the answers
y − 6 = one half(x + 3) y = one halfx − 6 y + 3 = one half(x − 6) x − 2y = 12
k this one is a straight forward substitution in to the point - slope formula \[y-y_1=m(x-x_1)\] replace \(m\) by \(\frac{1}{2}\) replace \(x_1\) by \(6\) and replace \(y_1\) by \(-3\)
I am so sorry, but I still do not understand. Some things in this lesson comes to me, and others, not so much.
do you know what i mean by "make a direct substitution"?
I will assume to make an automatic replacement?
yes so where you see \(m\) put \(\frac{1}{2}\) for example
\[\large y-\color{red}{y_1}=\color{green}m(x-\color{blue}{x_1})\] \[\color{green}m=\color{green}{\frac{1}{2}}\\ \color{blue}{x_1}=\color{blue}6\\ \color{red}{y_1}=\color{red}{-3}\]
make the substitutions and let me know what you get
My exam just reset so I lost everything..... Well, thank you.
everything? damn!
I know, not to mention all the questions changed.
hurry!
Ok for the question: Given the equation y − 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in standard form.
I got 3x-4y= -40
Would that be correct?
that is what i get yes
OK, hang on, I am going to try more lol
k
Ok so the question is: Choose the point-slope form of the equation below that represents the line that passes through the point (−1, 6) and has a slope of −3. y − 6 = −3x − 3 y − 6 = −3(x + 1) y = −3x + 3 3x + y = 3
And I got Y-6= -3 (x+1)
yes
Woo! Ok, I have more, sorry to bug you, I just don't want to mess this up.
no problem
Given the equation y − 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in slope-intercept form. −three fourthsx + y = 10 3x − 4y = −40 y = three fourthsx + 12 y = three fourthsx + 10
And I got 3x-4y= -10
that is standard form slope intercept form looks like \(y=mx+b\)
Hmm, Ok lemme figure this out.
ok let me know if you get stuck
Y= 3/4x + 10?
yes
OK, just one more lol
k no problem
Choose the point-slope form of the equation below that represents the line that passes through the points (−6, 4) and (2, 0). y − 4 = −one half(x + 6) y − 4 = 2(x + 6) y + 6 = −one half(x − 4) y + 6 = 2(x − 4)
And I got Y- 4 =2 (x+6)
no your slope is wrong
Poop, ok, let me try to fix this.
\[\frac{0-4}{2+6}=\frac{-4}{8}=-\frac{1}{2}\]
oops sorry i spoiled it
Lol so it would be Y-4= -1/2 (x+6)?
Sorry, I'm trying lol
yes that is it
you are doing fine
Thank you! I got a 100% on my quiz :D
yay
you realize except for the last one you did all the work, i just checked it
Yeah, I am proud of myself. But still, thank you for checking :)
yw
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