What is the slope of the line defined by the equation 3x - y = 0?

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x