y = -7x 0 = -7x 0 = x x-intercept point is (0, 0).
(6,5)
(x,7x)
7
7x + y = 6 y = 6 - 7x dy/dx = 0-7 = -7 Slope = -7
y = -7x 0 = -7x 0 = x x-intercept point is (0, 0).
7x + y = 4y = 4 - 7x
y=7x
7x + y = 8 Subtract 7x from each side of the equation: y = -7x + 8
(6,5)
7x+y=6
The Y intercept of y=7x+10 is 10.
If x=2, then 7x = 14 and if y=5 then 4y=20.
(x,7x)
7x + y + z = 6 7x + y + 4z = 9 y + x = 6 Take the first two statements and subtract them. 7x + y + z = 6 7x + y + 4z = 9 _____________ 0 + 0 - 3z = -3 Therefore: z = 1 Then you are left with: 7x + y + 1 = 6 7x + y + 4 = 9 which is impossible, so this is an impossible equation.
7
7x + y = 6 y = 6 - 7x dy/dx = 0-7 = -7 Slope = -7