Mathematics
Grade-8
Easy
Question
Which function is represented by this table?
- y = 2x + 2
- y = 3x – 4
- y = 4x – 5
- y = 6x – 8
Hint:
In this question , We have the four given point (x, y) . We have a table one side is x and another side is y so to find the which function is represents all. Just put x value and find y if its matches with table then it will be your answer.
The correct answer is: y = 2x + 2
Here we have to find which function is represented by this table.
Firstly , we have four point these are ,
Now we have , (1) y= 4x -5
At x = 0, y = 4 x 0 – 5
y = - 5
According to table at x = 0 , y = 2 but at here x = 0 and y = -5 so this function is not represent that table.
(2) y = 6x – 8
At x = 0, y = 6 x 0 – 8
y = - 8
According to table at x = 0 , y = 2 but at here x = 0 and y = -8 so this function is not represent that table.
(3) y = 2x + 2
At x = 0, y = 2 x(0) + 2
y = 2
According to table at x = 0 , y = 2 and here also x = 0 and y = 2 so this function is represent that table.
There fore the function is represent that table is y = 2x + 2
The correct answer is y= 2x + 2 (option (a)). Since the slope is 2, y = 2x + 2 is the only function that could fit.
In this question, we have given four points and we have to find the which function is represent that table. Just find at any one point of x the value of y and if its satisfy the table then that is correct function.
