HELP!in algebra

Question

HELP!in algebra

anonymous · Answer

attachment

anonymous · Answer

edit the document,save to your computer ,then attach it on here.please!

anonymous · Answer

ill try to help you with the other one but i need to do something else

anonymous · Answer

okay thanks @edolivera007

anonymous · Answer

Can someone else help me as well or nah?

anonymous · Answer

IDK 10 11 12 13 ZRRY

anonymous · Answer

really really need 9,11,12,&13

anonymous · Answer

Ok for #9:

The general formula is y = m * x + b

If we are told that m (which is the same as slope) = 2
 and that b (which is the same as y-intercept) = -4

You just rewrite it in slope-intercept form:

y = 2x - 4

anonymous · Answer

thank you .all i need now is 12 and 13 can you help?

anonymous · Answer

For 12, look at the graph. There is a b(yinterecpt) at 1. So b = 1. The slope = 1. 

Thus, our equation is y = x + 1

For 13:
First, find the slope. Use any 2 points. 
We can use any point and plug it in to our y = mx + b once you have the slope(Which is m)