The linear function that is represented by which table has the same slope as the graph? (the tables are the choices)

Answer with explanation:

Slope between two points having coordinates,  which lie in a coordinate plane is given by:

1.. Slope of linear function given in table 1, can be calculated by

2. Slope of linear function given in table 2, can be calculated by

3. Slope of linear function given in table 3, can be calculated by

4. Slope of linear function given in table 3, can be calculated by

→Now, slope of line which passes through (0,-3) and (3,3) is

→→→Table 3,

x :  -9   -7    -5   -3    -1

y: -25   -21   -17  -13   -9

has same slope as line given equal to 2.

ab will be equal to