-7x - 2y = -3
When the equation is given in the standard form: y = mx + c, the gradient is m. So here, y = 7x + 2 means m, the gradient, is 7.
7x + 2 = 6x + 2 if and only x = 0.
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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.
The standard form is 7x + 2y - 3 = 0
-7x - 2y = -3
The expression can be simplified to: 7x+4y
The expression can be simplified to: 7x+4y
y = 6/7x+3 General form of the line equation: 6x -7y+21 = 0
7x + y = 8 Subtract 7x from each side of the equation: y = -7x + 8
x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
7x = -3y + 12
It is: y = -7x+1 in slope intercept form
y = mx + b is standard form where m = slope and b = y intercept y = 7x + 3 b = 3 = y intercept
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It is: y = -3.5x+2.5 in slope-intercept form