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Find the value of y in the solution to the system of equations shown.
y= 12x+7
y=-6x+25

User Ashallar
by
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2 Answers

2 votes

Answer:

Alright well solve first the variable in one of the equations, then substitute the result into the other equation

Point form: (1, 19)

equation form: x = 1 and y = 19

Hope this helps have a nice day :)


Explanation:


User Upul Doluweera
by
8.5k points
6 votes

Answer: The required value of y is 19.

Step-by-step explanation: We are given to find the value of y in the solution to the following system of equations :


y=12x+7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\y=-6x+25~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)

Comparing equations (i) and (ii), we get


12x+7=-6x+25\\\\\Rightarrow 12x+6x=25-7\\\\\Rightarrow 18x=18\\\\\Rightarrow x=(18)/(18)\\\\\Rightarrow x=1.

From equation (i), we get


y=12*1+7=12+7=19.

Thus, the required value of y is 19.

User Sijin
by
7.5k points

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