Question

If f(x) = 4x + Ax+6X -5 and f(2)= 1, what is the value of A?

Answer 1

-7

Step-by-step explanation:

First, set the equation equal to one and the x's to 2

Then, solve the parts without variables

4(2)+a(2)+6(2)-5=1

8+a(2)+6(2)-5=1

8+a(2)+12-5=1

Then add like terms

8+a(2)+7=1

15+a(2)=1

Then subtract 15 from both sides

a(2)=-14

Finally, divide by two on both sides

a=-7