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Sagot :
Answer:
- y = 175.5x + 4723.5
Step-by-step explanation:
Use the pairs of values as coordinates and make a linear equation based on this.
- y = mx + b, the linear equation in slope-intercept form
The pairs are (3, 5250) and (7, 5952).
Find the slope:
- m = (5952 - 5250)/(7 - 3) = 702/4 = 175.5
Find the y- intercept:
- 5250 = 3*175.5 + b
- 5250 = 526.5 + b
- b = 5250 - 526.5
- b = 4723.5
The equation is
- y = 175.5x + 4723.5
y - blades of grass after x weeks, x - number of weeks passed since spreading the grass
Let weeks be x and blades be y ,form two coordinates
- (3,5250)
- (7,5952)
Find slope
- m=5952-5250/7-3
- m=702/4=351/2
Equation in point slope form
- y-5250=351/2(x-3)
- y-5250=351/2x-1053/2
- y=351/2x-1053/2+5250
- y=351/2x+9447/2
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