3
AssignmentMultiple Choice

Writing and Graphing Equations in Two Variables

Question 3 • TN-Algebra I

Select the equation that can be used to find the input value at which f (x ) = g (x ), and then use that equation to find the input, or x -value.

Answer
A
1.8x – 10 = –4; x =
B
1.8x = –4; x =
C
1.8x – 10 = –4; x =
D
–4 = x

Explanation

Set the two expressions equal: 1.8x − 10 = −4. Add 10 to both sides to get 1.8x = 6, then divide by 1.8 to find x = 10/3, or about 3.33. This matches the choice with the equation 1.8x − 10 = −4; that equation also appears under choice C.

AI-written and checked against the verified answer.

Previous
Next