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1 vote
Solve the system of equations.
y=8x-11
y=x+17

User Sudhasri
by
4.1k points

2 Answers

2 votes

Answer:

This is a simultaneous equation

Step-by-step explanation:
1-y=8x2-y=x+17Multiply equation 2 with -8 so that you can cancel out both 8y=8x-8y=-8x-1361y-8y=-7y+8x and -8x will cancel outso the equation is-7y=-136y=-136(x)/(y) -7y=19.428put the value of y in equation 119.428=8x19.428(x)/(y) 8=xso x=2.4285good luck

User Nickspiel
by
4.6k points
6 votes
Answer: See below

Step-by-step explanation:

y = 8x - 11
y = x + 17

We can solve this with substitution method:

8x - 11 = y = x + 17

Thus, 8x - 11 = x + 17 ( they both = y )

8x - 11 = x + 17
8x - x = 17 + 11
7x = 28
x = 4

Substitute x value to find y:

y = 8(4) - 11
y = 32 - 11
y = 21

Therefore, x = 4 and y = 21
User Mathias Stavrou
by
4.3k points