I would say that the third one is false.
Answer:
7/2, 3.5 (depending on which form you want it in)
Step-by-step explanation:
Looking at the numbers on the side, lets take two points they already gave us.
It goes up 14, and over 4 from 0,0.
14/4 Simplify.
7/2
7/2 is your slope
Note:
For those asking why it isn't "10/3" or anything else, It's because we can't be sure the line crosses that coordinate at that point. So lets just take two points where we know the actual coordinates, and derive the slope from that because it's more accurate.
1)
you have similar triangles(ABC, ADE), so their side length ratios are equal
8/2=4/CE
CE*4=4
CE=1
2)
angle bisector theorem:
CD/DA=BC/BA
CD/DA=10/8
I:AD=10CD/8
we also know AC=AD+CD=6
II:CD=6-AD
insert II in I:
AD=10(6-AD)/8
=5(6-AD)/4
=(30-5AD)/4
4AD=30-5AD
9AD=30
3AD=10
AD=10/3
Answer:
4
Step-by-step explanation:
f(-3) = 2 * (-3) + 10
