Question

Xavier is attempting to recreate a problem his teacher showed him in class. To do so, he creates the table below.

x
y
1
3
2
?

He remembers that the slope of the line through the ordered pairs in the table was 4. What is the missing y-value in the table?
5
7
8
12

Answer 1

7

Since slope = (change in y)/(change in x) = (y - 3)/(2 - 1) = 4, so y - 3 = 4 and y = 7.