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padilas [110]
3 years ago
13

Y = –x + 4 x + 2y = –8

Mathematics
2 answers:
valkas [14]3 years ago
8 0
X=16
y= -12


X+2( -x+4)=-8
X-2x+8=-8
-1x=-16
X=16

Y=-16+4
Y=-12
a_sh-v [17]3 years ago
6 0

Answer:

(16,-12)

Step-by-step explanation:

To find where these lines intersect, we must first know their slope. If the slope is equal, then the lines don't intersect and they are parallel.

The best formula for knowing slope is slope-intercept form, y=mx+b whereas m is the slope and b is the y-intercept (where the line crosses x=0)

The first equation is already in slope-intersect form so we can substitute the section that is equal to y into the second equation where y is.

x + 2(-x + 4) = -8

x + -2x + 8 = -8

-x + 8 = -8

-x = - 16

x = 16

Now we can use this known variable to find y.

y = -(16) + 4

y = -16 + 4

y = -12

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