Question

# If (3,1) is a solution of the equation 6x+by=25, then what is the value of b? 193 7 6 8

Solution

## The correct option is B 7 The solution to a linear equation in two variables is a set of values of x and y that satisfies the equation. Substituting x=3 and y=1 in the equation 6x+by=25, we get 6(3)+b(1)=25 ⇒     18+b=25 ⇒             b=7 Thus, the value of b equals 7.

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