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oholmes
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(GEOMETRY, HELP PLEASE) Write the equation of the line with a slope of 3/7 passing through the point (9 2)
 one year ago
 one year ago
oholmes Group Title
(GEOMETRY, HELP PLEASE) Write the equation of the line with a slope of 3/7 passing through the point (9 2)
 one year ago
 one year ago

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Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
Show me the slope form ....?
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
\[y  y_1 = m(x  x_1) \]Here,\[m = {3 \over 7} \\ y_1 = 2\\x_1 = 9\]
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
what is x?
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
I got y=3/7x2
 one year ago

hal_stirrup Group TitleBest ResponseYou've already chosen the best response.0
did you get it
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
\[y=mx+b, y=2, x=9, m=3/7\] Solve for b.
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Leave \(x\) and \(y\) just like \(x\) and \(y\).
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
I got y=3/7x2
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
\[2=\frac{3}{7}(9)+b, b=?\] And you got b=2?
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
You can also use the equation Parth gave: \[y−y_1=m(x−x_1) \rightarrow y−(2)=\frac{3}{7}(x−(9))\]
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Assuming you've studied algebra before, this should look familiar.
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
2x9= 3/7
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Ok, let's back way up then. The point is (9, 2) which means that at a particular point on the line, x=9, and y=2. The slope is 3/7 which means from any point on the line, you can go up 3 units then to the right 7 units and find another point on the line.
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
An equation of the line will be such that you can take the x and y coordinates from any point on the line and put them into the equation and make it a true statement. The slope is found by dividing the difference between the y coordinates of two points by the difference between the x coordinates of those two points (riseoverrun).
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
This time is got 3x7y=41
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
quick question, what type of triangle is RST?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
That looks better. You can test it by putting in the x and y coordinates from your point and seeing if it makes the statement true. i.e. 3(9)7(2)=?
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
Okay great! thank you
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Good, then the equation is true. For triangle RST, do you know how to measure the sides using the distance formula (i.e. the pythagorean theorem)? As a hint, notice the symmetry and how the sides RS and RT look to be the same length.
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
is it isoscles?
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
That would be a good guess. I'd probably still measure to make sure it wasn't equilateral. Can you see how long segment ST is?
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
I cant tell
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
The coordinates of points S and T are given. S is at (4,7) and T is at (4,7). They are both at the height y=7, so it is a straight horizontal like going from x=4 to x=4. How far is that?
 one year ago

oholmes Group TitleBest ResponseYou've already chosen the best response.0
I got isoscles. I check
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
Ok, I just want to make sure you know how to handle these questions in general in case you see a similar problem, that isn't so easy to solve.
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.1
There are particular skills and knowledge that these questions are testing from you. It is important that you have these basic skills proficiently so that you can move on to more difficult problems.
 one year ago
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