Hello folks, here is a problem. I don't know how and where to start solving it: A student is told to draw a linear graph on the same axis such that the intersection of the two graph will give the solutions to the equation x2+ 4x -7 =0. What is the equation of the linear graph he needs to draw? A. x=1 B. x=-1 C. y=1 D. y=-1 E. x+y=1 I don't know where to start from. Can anyone help? Just give me hints that I will follow in proceeding towards the calculation. Please note that I mean x squared when I wrote x2. Thank you.