11. A quadratic inequality is an equation in the
form
a. ax + b < 0.
b....
Mathematics, 22.09.2021 14:00 karenrivera22
11. A quadratic inequality is an equation in the
form
a. ax + b < 0.
b. ax + b>0 where ar0 or with <,>, or < c. ax²+bx+c> 0 where a # 0 or with >, S, 2, or <. d. ax +by+c> 0 where a#0 or with >, S. 2, or <
12. What is the domain of the given quadratic
function y = 4x²?
a. all positive real numbers c. all real
numbers
b. all negative real numbers d. all non-real
numbers
13. Ms. Joy wants to build a garage for her new car where the length is 5 feet longer than the width. The area should be greater than 150 ft. Which is a possible width of the garage? a. 6 ft
b. 8ft c. 10 ft d. 12 ft 14. A car travels a distance of d km in t hours. The formula that relates d to t is d= kt. What kind of
variation is it?
a. Direct b. Inverse c. Joint
Combined
15. Which of the following describes the inverse a. The number of hours to finish a job to the number of men working. b. The area of the wall to the amount of paint used
variation?
to cover it.
c. The time a teacher spends checking papers to
the number of students.
d. The amount of money raises in a concert to the
number of fickets sold.
16. Which of the following equation represents the
situation: the acceleration (a) of a moving object varies directly as the distance (d) it travels and Inversely as the square of the time (1) it travels. a. a= kt/d b. a=kdt c. a=kd/12 d. a=k/dt
17. When x=5, y=10 and when x=2, y = 4. This is an example of
a. Direct Variation c. Inverse Variation b. Joint Variation d. Combined Variation
18. Which is an example of a direct variation? a. xy=5 b. y 2x c. y=3/x d. ½ =x
19.If x is directly proportional to y, and k is the constant of proportionality, the relationship maybe expressed as a. x=ky b. x=k/y c. xy=k d. y=k/x
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