If Katarina runs at a pace of 5 mph, how many miles can she run in 4 hours? A. 22 miles B. 20 miles C. 21 miles D. 19 miles
2 answers:
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Answer:
The ordered pairs (5 , -2) , (3 , 1) , (4 , 2) are in the set of the solution ⇒
3rd answer
Step-by-step explanation:
- The first line has negative slope and passing through points (0 , 0)
and (4 , -2)
∵
- The second line has positive slope and passing through points (-2 , 0)
and (2 , 2)
∵
- Look to the attached figure to see the common part of the solutions
- The red shaded represents the inequality
- The blue shaded represents the inequality
- The shaded part with two colors represents the common solutions
of the two inequalities
- Lets find the ordered pairs which are in the solution set of the system
of linear inequalities
- Points (-4 , 2) , (-3 , 1) , (4 , -3) lies out the common shaded
- Points (5 , -2) , (3 , 1) , (3 , -1) , (4 , 2)
∵ Point (5 , -2) lies in the common shaded part
∵ Point (3 , 1) lies in the common shaded part
∵ Point (4 , 2) lies in the common shaded part
∴ The ordered pairs (5 , -2) , (3 , 1) , (4 , 2) are in the set of the
solution
