Answer: the slope is -1, and the y-intercept is 5.
Step-by-step explanation:
To find the slope and y-intercept, we change the equation to y = mx + b form, where m is the slope and b is the y-intercept.
3y + 3x = 15 (Minus 3x to both side)
3y = -3x + 15 (Divide 3 from the both side, to get in term of y)
y = - x + 5
Using y = mx + b form, in this case, the slope is -1, and the y-intercept is 5.
