AlgebraHardLinear function from a fixed increase
Algebra practice question
For a linear function f, f(x + 2) − f(x) = 10 for every value of x, and f(1) = 3. What is the value of f(6)?
Answer: 28
The slope is 10/2 = 5, so f(6) = 3 + 5(5) = 28.
Common wrong answers
- If you answered 13
- 13 adds 10 once.
- If you answered 33
- 33 uses 6 steps instead of 5.
- If you answered 53
- 53 uses a slope of 10 instead of 5.
More Algebra questions
- Hard
For how many integer values of x is −2 < (x − 5)/3 ≤ 1 true? - Hard
The system 2x + 3y = 6 and 4x + 6y = k has infinitely many solutions. What is the value of k? - Hard
Which of the following is the complete solution set to |x − 4| < 6? - Hard
A student has $40 to spend on notebooks costing $4 each and pens costing $2 each, and wants at least 12 items … - Hard
What is the least whole number of minutes of international calling in a month for which the total monthly cost… - Hard
How many liters of the 30% acid solution did the technician use?
Not affiliated with the College Board. SAT is a trademark of the College Board.