Q3:M6: System by substitution #2

Convert the standard form equation into slope-intercept form.
x + y = -1

• y = x - 1
• y = 27, 239, 430
• y = -1x
• y = -x - 1

Convert the standard form equation into slope-intercept form.
x - y = 2

• y = -x + 2
• y = x - 2
• x = 2
• y = 27, 239, 430

Convert the standard form equation into slope-intercept form.
6x - y = 1

• y = -x + ⅙
• y = 6x - 1
• x = ⅙
• y = 27, 239, 430

Convert the standard form equation into slope-intercept form.
5x + y = -5

• y = -5x - 5
• y = ⅕x - 5
• x = ⅕
• y = 27, 239, 430

y = x - 9 
y = -9

• 0, -9
• -1, 2
• -18, -9
• -81, -3

y = x + 6
y = 3

• -3,3
• -9,3
• -18,2
• 21,0

Solve by substitution

y = 8

2x + y = 18

• (5, 8)

• (-5, 8)

• (2, 8)

• (-2, 8)

Solve by substitution

x = 1

6x + y = 14

• (1, 35)

• 1, -13)

• (1, 8)

• (1, 13)

Solve by substitution

x = -2

7x + y = − 15

• (-2, -1)

• (-2, -2)

• (-2, 1)

• (-2, 2)

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

• (-2, -1)
• (1, -2)
• (-2, 1)
• (-1, -2)