What are the coordinates of A?

(7, 10)

Step-by-step explanation:

To find where something is on the coordinate plane, you simply count along the x-axis and y-axis. This dot is 7 units to the right and 10 units up. Make sure the x-axis value is always before a y-axis value in your ordered pair. Brainliest would be appreciated!

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4