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Sagot :
Answer: Hope this helped!
Step-by-step explanation:
1) y2-y1/x2-x1 = -5-1/4-2 = -6/2 = -3
2) The triangles are proportional to each other because, the bigger triangles AB(base) to BC(height) ratio is 8:4, which if simplified would be 4:2, and the smaller triangles is 4:2, which is the same. In other words, both of the triangles are the same.
3) y=0.15x, so the slope is 0.15, and each pencil costs 15 cents, or 0.15 dollar.
4) y=55x, where x=5, so y=55(5)=275.
The bus will travel 275 miles in 5 hours.
5) Slope-intercept form : y=mx+b, where m=slope, and b=y-int.
So, C = 15t+4 is the equation.
6) Yes, this graph does show a proportional relationship, because it costs $1 for every 10 photos, and this ratio is same for every amount of photos.
7) y-y1 = m(x-x1)
y-6 = 4(x-4)
y-6 = 4x - 16
y = 4x - 10
8) Olivia: y=2x
Matt: y=3x
Matt travels at a faster rate, and I know this because Matt walks at 3 miles per hour, while Olivia walks 2 miles per hour, and obviously 3 mph is faster than 2 mph.
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