Quiz 2: Answers
Question 1: Find the equation of a line passing through (4,12) and (-6,20)
1. The answer is 12= 8 (4)+b
The points are (4,12) and (-6,20).-10
a.) The formula to find slope is change in y over change(Change means to subtract) in X.
b.) 20-12=8
c.) -6-4=-10.
d.) change in y is 8 and change in x is -10.
e.) the equation to plug these two points in is Y=mx+b. in this case the Y is 12 and x is 4.
f.)when you plug in these numbers you end up with this is 12= 8 (4)+b.
-10
-10
Question 2: Find the equation of a line passing through (5,7) and (1,9).
2. The answer is 7= 1 (5)+b.
-2
a.) The points are (5,7) and (1,9). 9 minus 7 is 2 and 1 minus 5 equals -4.b.) The slope is 2 , reduced it is 1
-4 -2
c.) now plug in the y and x.
d.) 7= 1 (5)+b and thats the equation in y=mx+b.
-2
Question 3: Find the equation of a line passing through (8,1) and (-2,3).
3. The answer is 1=1/3(8)+b
a.) The points are (8,1) and (-2,3). 3 minus 1 is 2 and -2 minus 8 is -6.b.) The slope is 2 which reduced is 1
-6 -3
c.) Plug in the y and x
d.) 1= 1 (8)+b
-3
I know how to do everything now. You are seriously the best teacher ever.
ReplyDeleteYour my hero
DeleteHey there Mrytle. your blog is very wonderful. I think your explanation of finding a line passin through a certain point is very good. But where are your gosh darn visuals?
ReplyDelete<3 Cody and Alec
DeleteMy gosh darn visuals in another post silly goose! Thanks bro
Delete<3 reanna and landon
Very good job showing the steps! That's what I'm talking about!
ReplyDelete