Use the substitute method to solve the system of equations. 3x+y=10 y=2x a. (-2,4) b. (2,-4) c. (2,4) d. (4,2)

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Will give brainliest what is the value of x? enter your answer in the box.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.