Question

What is the equation for AD?
http://i.imgur.com/biYGR5o.png
A) y=-x+6
B) y=x+6
C) y=-x-6
D) y=x-6

Answer 1

given the y intercept you can cross out 2 answer choices immediately

Answer 2

C and D?

Answer 3

yep those are the ones you would cancel out

Answer 4

now you could explicitly solve for the slope, but what do you notice about the line? is it decreasing or increasing?

Answer 5

Increasing

Answer 6

yep good job so you can cancel out answer choice a. because the slope is negative.

Answer 7

Awesome, got another one. It's exactly the same.

Answer 8

alright lets see it

Answer 9

Equation for CE?
http://i.imgur.com/KX4COre.png
A) y=x-1
B) y=4/5x+1
C) x+y=1
D) y=4/5(x+1)

Answer 10

well first off we can cancel out choice c) as it has a negative slope

Answer 11

and A?

Answer 12

Next we notice that for equation CE that the y-intercept is 1. So we can cancel out A. and D.

Answer 13

yep

Answer 14

We can cancel out D because the y-intercept turns out to be 4/5

Answer 15

so now your left with one answer choice

Answer 16

which is B

Answer 17

yep good job

Answer 18

sweet thanks!

Answer 19

np glad to help