Are u dumb or somthing????????
Y=3x−9
y=3(0)-9
y=9
Now plug in y to solve for x.
y=3x−9
9=3x-9
18=3x
6=x
The x-intercept is (6,0)
1.) slope=2
2.) slope= -5/4
3.) slope= 7/5
Answer:
The equation is 
Step-by-step explanation:
First off, we know r is going to be subtracted from 6 somewhere in the expression since the problem says "decreasing by r miles per hour."
If we want to see how long it would take him to jog 8 miles up to the mountain road we would have to take 8 and divide it by 6 - r.
Therefore, the equation is 
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80/100 = 96/x
80x=9600
8x=960
x=120
120/4
30
so the answer is b