Answer: b. 6
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Explanation:
Let's use the first two rows of the table to find the slope
m = slope
m = rise/run
m = (change in y)/(change in x)
m = (y2-y1)/(x2-x1)
m = (12-10)/(6-4)
m = 2/2
m = 1
The slope is 1.
Now let's use the first row of the table, along with the slope we just found, to plug into y = mx+b. The goal is to find b.
y = mx+b
10 = 1*4+b
10 = 4+b
10-4 = b
6 = b
b = 6
The y intercept is 6.
The y = mx+b equation is y = 1x+6 which is the same as y = x+6
