Find the coordinates of the points of intersection of the graph with the coordinate axes y = x + 4.

The point of intersection of each straight line with Ox lies on the given coordinate axis. That is, the axis of coordinates Ox forms at the intersection with the straight line y = x + 4 a point, whose coordinate is y = 0. Knowing this, we substitute the value 0 into the formula y = x + 4 and calculate the coordinate at this point:
x + 4 = 0.
The unknown x is equal to the difference between the sum of 0 and the known term 4:
x = 0 – 4;
x = -4.
Intersection point y = x + 4 with Ox (-4; 0).
The coordinate axis Oy forms a point at the intersection with the straight line y = x + 4, whose coordinate is x = 0 (since this point lies on this axis). Means:
y = 0 + 4 = 4.
Intersection point y = x + 4 with Oy (0; 4).