Answer:
iit's not a function because in order for it to be a function, there can be no more than 2 of the same x values. you can also do a vertical line test, where you draw straight lines up and down and if it crosses several times through the line it's not a function.
Answer:
12
Step-by-step explanation:
I think this will be the answer
Answer:
C
Step-by-step explanation:
Here are the steps
put it into y=mx+b 4y=-5x+20
to isolate y divide both sides by y=-5/4+5
to find the xi
xi is when y=0 so plug it in to the equation 4y=-5x+20 4(0)=-5x+20
0=-5x+20 subtract 20 from each side -20=-5x the negatives cancel out 20=5x
to isolate x divide each side by 5 x=20/5
20/5=4
Answers:
m=-5/4
yi=5
xi=4