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olya-2409 [2.1K]
3 years ago
13

Can you help me with this problems

Mathematics
1 answer:
k0ka [10]3 years ago
7 0
To find y = mx + b you need to determine the slope. To find slope use the formula
m = y2 - y1 / x2 - x1

Use two points on the graph such as (4, 100) and (12, 300)

Now plug it into the formula

m = 300 - 100 / 12 - 4

m = 200 / 8

m = 25

Now we know the slope, but we need to find the y-intercept.

y = mx + b

y = 25x + b

Substitute one of the points (4, 100) as the y value and x value to find b, the y intercept

100 = 25(4) + b

100 = 100+ b

100 - 100 = b

0 = b

Now plug in your formula

Y = 25x + 0

y = 25x



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