Answer :
Coordinates of point A = (-1,7)
if y = 3x
Then when x = 0, y = 0
when y = 0, x = 0
So the distance between two points can be found using
[tex]\sqrt[]{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]so distance from A (-1, 7) and (0,0)
=> x1 = -1, y1 = 7
=> x2 = 0, y2= 0
[tex]\sqrt[]{(0_{}-7)^2+(0_{}-(-1))^2}[/tex][tex]\begin{gathered} \sqrt[]{((7)^2+(1))^2} \\ \\ \sqrt[]{49\text{ + 1}} \\ \\ \sqrt[]{50} \\ \\ \sqrt[]{50\text{ }}\text{ = 7.07} \end{gathered}[/tex]