Complete the steps used to slove a system of liner equations by substituting the value of y into one of the original equations to find the value of x. What is the solution?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

What percent of 18 is 24? and plz explain thx.