1. 3x+3y=15
-3y = -3y (subtract 3y from both sides)
3x = 15-3y
----------------------
3 = 3 3 (divide each number by 3)
x = 5- y
Its slope is -3 so we got
y=-3x+b
and the graph passes through (1,1)
so we got b=4
the equation is y=-3x+4
Hope this will help
Answer:
cos 60° = 1/2
Step-by-step explanation:


The answer is 66%. You get the answer by multiplying 100 to 0.66.