If you follow PEMDAS your answer would be 3.6.
1) y= -4x+c
2) y= 3x+c replace x and y to find c , 5=3(2)+c
C= -1
Y=3x-1
3) find slope first m=y2-y1/x2-x1 = 0-(-1)/-2-1 = 1/-3 and now you have y= -1/3x+c to find c just replace any of the given points , 0= -1/3(-2)+c
C= -2/3 and so y= -1/3x-2/3
4) DO THE SAME STEP AS NUMBER 3 and enjoy!
Ok, i really don't remember this, so i don't want to steer you wrong. maybe wait for another answer?
Answer:
r=8
Step-by-step explanation:
you divide 28 by 3 1/2 to get r=8
