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Which is the y-intercept of the relationship represented in the table?
x y
-10 10
0 20
10 30
20 40
Group of answer choices
20
10
-20
-10

Sagot :

Answer:

20

Step-by-step explanation:

we first find the formula of the line

y = mx+b

m = (y2-y1)/(x2-x1)

m = 10/10

m = 1

y = 1x + b

y = x + b

plug in points from the table

10 = -10 + b

20 = b

b = 20

b is the y-intercept

anoelleallen
20

When there is a 0 in the x coordinate, you know it is a y-intercept, and vice versa.
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