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Sagot :
Plug the values into the equation and check if it's true.
[tex](x,y)=(-9,-12) \\ 4 \times (-9) -5 \times (-12) \stackrel{?}{=} 24 \\ -36+60 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24 = 24 \\ a \ solution \\ \\ (x,y)=(1,-4) \\ 4 \times 1 - 5 \times (-4) \stackrel{?}{=} 24 \\ 4+20 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24=24 \\ a \ solution[/tex]
[tex](x,y)=(4,8) \\ 4 \times 4 - 5 \times 8 \stackrel{?}{=} 24 \\ 16-40 \stackrel{?}{=} 24 \\ -24 \stackrel{?}{=} 24 \\ -24 \not= 24 \\ not \ a \ solution \\ \\ (x,y)=(6,0) \\ 4 \times 6- 5 \times 0 \stackrel{?}{=} 24 \\ 24 -0 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24=24 \\ a \ solution[/tex]
The answers are A, B and D.
[tex](x,y)=(-9,-12) \\ 4 \times (-9) -5 \times (-12) \stackrel{?}{=} 24 \\ -36+60 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24 = 24 \\ a \ solution \\ \\ (x,y)=(1,-4) \\ 4 \times 1 - 5 \times (-4) \stackrel{?}{=} 24 \\ 4+20 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24=24 \\ a \ solution[/tex]
[tex](x,y)=(4,8) \\ 4 \times 4 - 5 \times 8 \stackrel{?}{=} 24 \\ 16-40 \stackrel{?}{=} 24 \\ -24 \stackrel{?}{=} 24 \\ -24 \not= 24 \\ not \ a \ solution \\ \\ (x,y)=(6,0) \\ 4 \times 6- 5 \times 0 \stackrel{?}{=} 24 \\ 24 -0 \stackrel{?}{=} 24 \\ 24 \stackrel{?}{=} 24 \\ 24=24 \\ a \ solution[/tex]
The answers are A, B and D.
Answer:
A(-9,-12)
B(1,-4)
D(6,0)
Step-by-step explanation:
i took the test
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