Let us choose points to draw it
x = 0, 1, 2, 3, 4
At x = 0
y = 50(0) + 100 = 100
(0, 100)
At x = 1
y = 50(1) + 100 = 150
(1, 150)
At x = 2
y = 50(2) + 100 = 200
(2, 200)
At x = 3
y = 50(3) + 100 = 250
(3, 250)
At x = 4
y = 50(4) + 100 = 300
(4, 300)
Let us draw the graph