Question

Use the rule y = -x + 7 to fill in the blank.

If (-1, y) is on the graph, then y =

Answer 1

y = 8 is your answer.

Explanation:

-1 is x and you have the equation.

y = -x + 7

y = -(-1) + 7

y = 8 is your answer.

Answer 2

Answer: The required value of y is 8.

Step-by-step explanation: We are given the following linear rule :

`y=-x+7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)`

We are given to find the value of y if the point (-1, y) lies on the graph of (i).

We know that

if the point (-1, y) lies on the graph of equation (i), then it must satisfy the equation.

Therefore, from equation (i), we get

`y=-x+7\\\\\Rightarrow y=-(-1)+7\\\\\Rightarrow y=1+7\\\\\Rightarrow y=8.`

Thus, the required value of y is 8.