X−3y=1
x+y=9
which property allows you to write the equation −4y=−8 as the first step to solving the system of equations?
question 3 options:
division property of equality
substitution property of equality
subtraction property of equality
distributive property

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?