SOLUTION: For The Equation y=2(x)+15,and y=4x+7. Find an x-value that gives the same y-value for both equations
Algebra.Com
Question 277802: For The Equation y=2(x)+15,and y=4x+7. Find an x-value that gives the same y-value for both equations
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
y=2x+15
y=4x+7 SUBTRACT.
-----------------
0=-2X+8
2X=8
X=8/2
X=4 ANS.
PROOF:
Y=2*4+15
Y=8+15
Y=23
Y=4*4+7
Y=16+7
Y=23
RELATED QUESTIONS
Find the equation of both the line and exponential curve going through the point (2,9)... (answered by josgarithmetic)
Solve the equation for y. Then find the value of y.
3xy-4x=19 ;... (answered by MathLover1)
Solve the following system of equations. (this means – find the value for X and the value (answered by jim_thompson5910)
The sum of two numbers is 15. Three times the first number is equal to 5 times the... (answered by baigshahib)
Solve the equation for y. Then find the value for y for each value x.
4x=3y-7; x= a, 5,... (answered by Maths68)
Find values for x and y that fit both of the equations 5x+3y = 8 and 4x + 3y =... (answered by sofiyac)
find the value for x^2 + y^2 if x + y=7 and x^3 + y^3 =... (answered by dkppathak)
For which value of K the system of equations x+y=2 and x-y=K has an unique solution? (answered by ikleyn)
given the equations 2x+y=1 and y=x+7 find the value of... (answered by ewatrrr)