Work out the value of 2x + 8y when x = 7 and y = -4

asked Feb 20, 2023 182k views

2 votes

Work out the value of 2x + 8y
when x = 7 and y = -4

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2 votes

Answer: -18

Explanation:
Substitute X and Y
2(7)+8(-4)
2 times 7= 14
8 times -4= -32
Add 14 and -32 together
Get -18

RGRGRG answered Feb 23, 2023

4.2k points

1 vote

Plug in 7 for x and -4 for y…
2(7)+8(-4)=14+(-32)= -18

Answer: -18

Paul Dove answered Feb 27, 2023

4.8k points

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