AlgebraEasyEvaluating a decreasing linear function
Algebra practice question
The function h is defined by h(x) = 9 − 2x. What is the value of h(4)?
Answer: 1
h(4) = 9 − 2(4) = 9 − 8 = 1.
Common wrong answers
- If you answered 7
- 7 is 9 − 2, forgetting to multiply the 2 by 4.
- If you answered 17
- 17 is 9 + 8, adding 2(4) instead of subtracting it.
- If you answered 28
- 28 is (9 − 2) × 4, subtracting before multiplying. Multiply 2 by 4 first: 9 − 8.
More Algebra questions
- Easy
If 3x + 7 = 22, what is the value of x? - Easy
If x/4 = 9, what is the value of x? - Easy
The function f is defined by f(x) = 6x − 5. What is the value of f(3)? - Easy
The perimeter P of a rectangle with length l and width w is given by P = 2l + 2w. Which of the following expre… - Easy
Which equation defines the function f? - Easy
In the xy-plane, the graph of the equation y = 4x − 12 crosses the x-axis at the point (a, 0). What is the val…
Not affiliated with the College Board. SAT is a trademark of the College Board.