Use the coordinates of the labeled point to find the point-slope equation of the line.

For this case we have that by definition, the equation of a line of the point-slope form is given by:

Where:

m: It's the slope

: It is a point through which the line passes

To find the slope, we need two points through which the line passes, observing the image we have:

Thus, the equation is of the form:

We choose a point:

Finally, the equation is:

Option D

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

here is a big fat