Which of the following functions has a rate of change that stays the same?
A)y = x2 – 5x –14
B)y = 19x – 10
C)y = 5x ***********
D)y = 0.03x2 + 11x + 1
the answer is b y=19x-10
Connexus 9th grade Unit 4 Lesson 2 Quadratic Functions
1. B
2. A
3. C
4. B
5. D
6. B
Hope this helps :)
These are my test answers but they might be different for your test because they do change the questions.
ya it's B.
It's B just took the test.
They're right, it's B. y = 19x – 10
Anyone got the full test
#3 is not c it’s d
To determine which function has a rate of change that stays the same, we need to observe the coefficients of the x terms in each function.
A) y = x^2 – 5x – 14
The coefficient of the x^2 term is 1, and the coefficient of the x term is -5. These coefficients are different, so the rate of change does not remain constant.
B) y = 19x – 10
The coefficient of the x term is 19. Since this coefficient is constant and does not change with the value of x, the rate of change for this function remains the same.
C) y = 5x
The coefficient of the x term is 5. Similar to the previous function, since this coefficient remains constant, the rate of change for this function also remains the same.
D) y = 0.03x^2 + 11x + 1
The coefficients of the x^2 and x terms in this function are 0.03 and 11 respectively. These coefficients are different, so the rate of change does not stay constant.
Therefore, the function with a rate of change that stays the same is C) y = 5x.