SOLUTION: how do you find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn o
Algebra.Com
Question 136729This question is from textbook The Shapes of Algebra, Linear System and Inequalities
: how do you find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn out the same as when i graphed them.
This question is from textbook The Shapes of Algebra, Linear System and Inequalities
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find where two lines cross with out graphing them; for example: y = 2x + 4 and y = .5x - 2. I tried setting the equations the same and solving, but it did not turn out the same as when i graphed them.
---------------------------------
2x+4 = 0.5x-2
1.5x = -6
x = -4
------------
Substitute to solve for "y":
y = 2*-4+4
y = -4
--------------
Solution: (-4,-4)
=====================
Cheers,
Stan H.
RELATED QUESTIONS
where do the two lines cross?
y=2x-6... (answered by checkley77)
Linear System
Use the graphing to find the point of intersection of each pair of lines.
(answered by stanbon)
Using the equation: {{{y=20x-5x^2}}} How do you figure out where the graph will cross... (answered by checkley77,solver91311)
Hi there. I have a system, and I have tried to solve it two ways: substitution and table... (answered by rapaljer)
Problem:
Angle M and angle L are complementary angles. Angle N and angle P are... (answered by cleomenius)
I need help with understanding inequality with two variable.
Example how to solve... (answered by elima)
directions on worksheet--solve for y and graph equation *find solution*
i cannot figure (answered by solver91311)
I need to find out where the equations x + 2y=1and -2x+ y=-4 intersect. I have tried and... (answered by Alan3354)
Find the distance between two parallel lines
Y=2x-1, y=2x+9
I tried graphing it and... (answered by josgarithmetic,greenestamps)