y = 3x + 1
It's a linear function.
Calculate the values of y for x = -5 and x = 6.
for x = -5 → y = 3(-5) + 1 = -15 + 1 = -14 → (-5, -14)
for x = 6 → y = 3(6) + 1 = 18 + 1 = 19 → (6, 19)
y = 3x + 1 for -5 < x < 6 → -14 < y < 19
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