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Answer:

LETTER D (2x+y = 9)

Step-by-step explanation:

Given: (0,9) and (3,3)

• notice that (0,9) is the y-intercept

we use the slope intercept form

• y = mx+b
• where m = slope and b = y-intercept

Solving for slope

• m = y2-y1 / x2-x1
• m = (3-9) / (3-0)
• m = -6 / 3
• m = -2

Now ,

• y = mx+b
• y = -2x+9

convert this to standard form

• 2x+y = 9