Solve the sytems of linear equation by elimination 8x-9y=7 2x-3y=-5
1 answer:
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Answer: number of adults = 3, number of children = 5
Step-by-step explanation:
let the number of adults be x, and the number of children be y.
x + y = 8 , 15x + 8y = 85
1st equation x 8 = 8x + 8y = 64
substitute x=3
Answer:
See explanation
Step-by-step explanation:
Assuming the given inequality is
Then the corresponding linear equation is
When x=0, we have
When y=0, we have
The T-table is:
<u>x | y</u>
0 | 4
6 | 12
We plot this points and draw a solid straight line as shown in the attachment.
Now let us test the origin: (0,0) by plugging x=0 and y=0 into the inequality.
....This is true so we shade the lower half plane as shown in the attachment.
