y -3x =1
add 3x to each side
y = 3x+1
The coefficient for x is 3 and the constant is 1
I’m not sure if the 15 is the question number but if it is the answer is 32. use PEMDAS
4x-5y=3
4x-5(10)=3
4x-50=3
+50 +50
4x=53
/4 /4
x=53/4
Use a portion of the circumference: pi x 2 x r x angle at centre =8xpix72/360 =8pi/5
