Compare initial values of two functions
Find the y-intercept (initial value) of each function. In a table it is the y-value where x = 0. Write A or B.
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Function A is y = 3x − 10. Function B is shown in a table: x = 0, 1, 2, 3 and y = 10, 14, 18, 22. Which function has the greater y-intercept (initial value)? Write A or B.
Answer: B
Function A is y = 7x + 3. Function B is shown in a table: x = 0, 1, 2, 3 and y = −8, 0, 8, 16. Which function has the greater y-intercept (initial value)? Write A or B.
Answer: A
Function A is y = 2x − 9. Function B is shown in a table: x = 0, 1, 2, 3 and y = 6, 15, 24, 33. Which function has the greater y-intercept (initial value)? Write A or B.
Answer: B
Tip: Find the y-intercept (initial value) of each function. In a table it is the y-value where x = 0. Write A or B.
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