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Oksi-84 [34.3K]
2 years ago
3

y<-x+a y>x+b in the xy-plane, if (0,0) is a solution to the inequalities above, which of the following relationships betwe

en a and b must be true
SAT
1 answer:
OLga [1]2 years ago
7 0

a must be greater than zero and b must be less than zero.

<h2>Explanation:</h2>

Here we have the following system of inequalities:

\left.\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}yx+b\end{array}\right.\right.

Given that the origin is a solution to the system, then by substituting x=0 \ and \ y=0 into each inequality we'll get the relationship for both a and b:

\left.\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}00+b\end{array}\right.\right. \\ \\ \\\left.\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}0b\end{array}\right.\right. \\ \\ \\\left.\begin{array}{c}(1)\\(2)\end{array}\left\{ \begin{array}{c}a>0\\b

So finally, the conclusion is that a must be greater than zero and b must be less than zero.

<h2>Learn more:</h2>

Inequalities: brainly.com/question/12890742

#LearnWithBrainly

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E=420-7s the elevation E in meters of a skydiver s seconds after parachute is given by the equation above. What is the best inte
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Answer:

Here is the full question

E  = 420  −  7 s  The elevation,  E  , in meters, of a skydiver  s  seconds after parachute activation is  given by the equation above. What is the best interpretation of  420  as shown in the equation?

 

a) The skydiver started diving at an elevation of  420  meters.

b) The skydiver activated the parachute at an elevation of  420  meters.

c) The skydiver took  420 seconds after parachute activation to reach the ground.

d) The skydiver's elevation decreased by  420  meters per second after parachute activation.

Explanation:

Answers is that The skydiver's elevation decreased by  420  meters per second after parachute activation.

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