Question 221313
prove that if 4x-4=3y+6 and y=2x then x=-5


Step 1.  Substitute the values of x and y into the equation to see if it leads to a true statement.


Step 2.  Find y when x=-5.  Then y=2*(-5)=-10.


Step 3.  Substitute x=-5 and y=-10 into 4x-4=3y+6


4*(-5)-4=3(-10)+6


-20-4=-30+6



-24=-24  which is a true statement.


Step 4. ANSWER: x=-5 and y=-10 satisfies both y=-2x and 4x-4=3y+6.


I hope the above steps were helpful.


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Good luck in your studies!


Respectfully,
Dr J