Question

What value of b will make the point {3,-1} lie on the line y=mx-7 in standard {x,y} coordinate plane?

A. -10
B. -8/3
C. 2
D. 8/3
E. 10

Answer 1

m=2

Explanation:

We are given a line y=mx-7 and the point lying on the given line is (3,-1) in the standard {x,y} coordinate plane.

Therefore, substituting the values of x=3 and y=-1 in the given line, we have,

⇒
`y=mx-7`

⇒
`(-1)=m(3)-7`

⇒
`-1+7=3m`

⇒
`6=3m`

⇒
`m=2`

Hence,the value of m will be equal to two.