Question

Which is an equation of the line passing through points at (1, 6) and (-2, 1)?

Answer 1

answer choices

y = 2x + 5
y = 5/3x + 13/3
y = x + 5
y = -1/2x +13/2

Answer 2

Do you know how to find the slope of a line given two points?

Answer 3

naww i just need help finding the answer is it y=
mx+b?

Answer 4

y = mx + b is the equation of a straight line with slop = m and y-intercept = b.

Answer 5

The slope is found by taking the "rise over run" or "difference is y over difference in x".

Answer 6

I am not good at math so i have no idea what you just said. lol :/ could you please just tell me the answer?

Answer 7

Sometimes a picture is worth a thousand words.

1) Plot the two points.
2) Find out how far "up" you go
3) Find out how far "right" you go.

In this case up = rise = 5
and
right = run = 3

so the slop is just 5 / 3.

Answer 8

okay gotcha. so would the answer be y = 5/3x + 13/3 ?

Answer 9

*slope not "slop" lol.

Answer 10

Well, it's the only option with a slope of 5/3. :)

Just check to see if 13/3 is really 4.33333 and you're done.

Answer 11

yes it is! lol thank you! could you help me with some other problems?

Answer 12

I'm going to sleep for the evening. Got a long day tomorrow. :) I'm glad this was helpful though. The program I used is called Geogebra. http://www.geogebra.org/cms/en/installers I HIGHLY recommend it, because it can solve problems like this in about 2 seconds. :)

Answer 13

ok thank you