Question

If (2, -1) is a point on the graph of 3x - y - k = 0, then the value of k is

Answer 1

Answer:

3x - y - k = 0,

(x,y)=(2,-1)

3*2-(-1)-k=0

6+1-k=0

7-k=0

k=7

Step-by-step explanation:

Answer 2

Answer:

(x,y) = (2,-1)

⇒ here, x = 2

             y = -1

so let's substitute,

3x - y - k = 0

3 × 2 - (-1) - k = 0

6 + 1 - k = 0

7 - k = 0

- k = -7

k = 7

↔ hope it helps ya' :)