Question

Find the value of m, expressed as a common fraction so that this relation is not a function.

{(-2m+1,-4),(-6m+8,0)}

Answer 1

Let's see

x must be equal on both sides as it's not a function

• -2m+1=-6m+8
• 4m=8-1
• 4m=7
• m=7/4

Answer 2

• m = 7/4

Explanation:

• If the two points have same input with different outputs, then this relationship is not a function, according to definition of the function.

Make the x-values same and solve for m

• - 2m + 1 = - 6m + 8
• 6m - 2m = 8 - 1
• 4m = 7
• m = 7/4