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

User Nirav Joshi
by
4.7k points

2 Answers

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
User RGRGRG
by
4.8k points
1 vote
Plug in 7 for x and -4 for y…
2(7)+8(-4)=14+(-32)= -18

Answer: -18
User Paul Dove
by
5.5k points
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