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y=24
y = -5x2 - x + 9
If you mean: y = 6x+4 then the slope is 6 and the y intercept is 4
if you mean y=6x then y is the same as 6 times x if x means 3.5 then y is six times 3.5 if you can't do multiplying, add them up ! (its 21)
It is an algebraic expression in the two variables, x and y.
If you mean: y = 6x+4 then it is a straight line equation with a slope of 6 and a y intercept of 4
If you mean: y = 6x+11 and y = 2x+7 Then by substitution: x = -1 and y = 5
15
If you mean: y = 6x+2 then its perpendicular line is -1/6.
14
y = 6x2 + x -1 ?? discriminant = b2 - 4ac = 12 - 4(6)(-1) = 25
It is √(x15), which can be simplified to approx 3.873*√x.