Answer:
0x+3 or y=3
Explanation:
If you need clarification use a graphing calculator like Desmos to check this
y=3
Using slope-intercept form, y=mx+b, where m is the slope and b is the y-intercept. Plugging in 0 for the slope, y=b. Since y=3 in the point (3,3), 3=b. Therefore, the line is y=3.
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