(1, 3)-put first equation in slope-int form.
x + y = 4 (subtract x from both sides)
-x -x
y = -x + 4. now, graph the y-int at (0, 4) and graph a few points above it by going up 1 and left 1....Read More

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(-1, 4)-step 1: solve the first equation for y because it is easier to solve
-3x + y = 7 (add 3x to both sides)
y = 3x + 7
step 2: plug in 3x + 7 for y in second equation
5x + 2y = 3
5x +...Read More

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(2, -3)-step 1: solve first equation for y (less messy)
x + 2y = -4 (subtract x from both sides)
2y = -x - 4 (divide both sides by 2)
y = -1/2x - 2
step 2: plug -1/2x - 2 for y in second...Read More

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(8, -3)-step 1: solve first equation for y b/c it the easiest one
x - y = 11 (subtract x from both sides)
-y = -x + 11 (divide both sides by -1)
y = x - 11
step 2: plug in (x - 11) for y in...Read More

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(8, 1.75)-step 1: solve first equation for y less messy
x + 4y = -1 (subtract x from both sides)
4y = -x - 1 (divide both sides by 8)
y = -1/4x - 1/4 (leave them as fractions easier to deal...Read More

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(1, 2)-the first one is already in slope-int form. so, graph the y-intercept at (0, 0) and graph a few points above it by going up 2 and right 1. then, graph a few below y-intercept by going down 2...Read More

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(-2, 2)-solve the first equation for y
x + y = 0 (subtract x from both sides)
-x = -x
y = -x
graph a point at the y-int (0, 0). then, point a few points up 1, left 1. then, go back to y-int...Read More

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