Adjust the sliders or key in values to create a model of direct variation that passes through the points. Which value of k fits
the model? Use the graph's marking tool to write your k-value on the graph.
+ MARK
+ RELATIONSHIP
10+
Data points
o
y = mx + b
m: 2
-10
-
b: 0
-10
Ext session
9:49

answer: i think it is (1,-2)

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.