To graph the straight line, you need 2 points from the line.

For "x = 1" we find "y" by plugging the value "x = 1" into the equation "y=-5x+4"

y = -5*1 + 4

y = -5 + 4

y = -1

One point is (1, -1).

For "x = 0" we have

y = -5*0 + 4

y = 4

Another point is (0, 4).

Now that we have 2 points, we can draw the line through those points