Tell whether the lines for each pair of equations are parallel,perpendicular,or neither.
2 answers:
Answer:
The lines for each pair of equations are perpendicular, because the slopes for both of these have negative reciprocals.
Step-by-step explanation:
-5x+10y=5
x-2y=-1
2y=x-(-1)
2y=x+1
y=1/2x+1/2
Answer:
Both of the lines are parallel.
Step-by-step explanation:
Solve for x.
Plug in the value of y into the equation.
y= -2x+4
-5x+10y=5
-5x + 10(-2x+4) = 5
-5x - 20x + 40 = 5
-40 -40
-----------------------------------
-5x - 20x = 5 - 40
-5x - 20x = -35
-25x = -35
÷ -25 ÷ -25
-----------------------
x = 1.4
Solve for y.
Plug in the value of x into the equation.
y= -2x+4
y = -2(1.4) + 4
y = -2.8 + 4
y = 1.2
Solve.
Plug in both the x an y values.
-5x+10y=5
-5(1.4) + 10(1.2) = 5
-7 + 12 = 5
5 = 5
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