The equation would be 35=5x. ‘x’ is the number of seashells her brother has, and the 5 in front of the x is showing that she has 5 times more than him. to find how many her brother has, divide both sides of the equation by 5 to make the x stand alone. you should then get 7=x, meaning that her brother has 7 shells
M = -4/3 (slope stays the same) so y= -4/3x + b b = y intercept without a point on the line I can’t figure out what exact line you were looking for but that equation with any value as b will give you a line parallel to the original.