It is one of two variables, conventionally plotted on the vertical axis in the coordinate plane.
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Straight line equations have two variables in the form of x and y
Y = ('x' times any number) + 7
Without any equality signs the given expressions can't be considered to be straight line equations but in general parallel straight line equations will have the same slope but different y intercepts.
Straight line equations:- And if: 3x-4y = 8 Then: y = 0.75x-2 whereas 0.75 or 3/4 is the slope and -2 is the y intercept
The equation of a straight line in slope intercept form is y = mx + c, where y is the y coordinate of any point, x is the x coordinate of that point, m is the slope and c is the y intercept. Therefore, the equations that correctly describe a line with a y intercept of 7 would be: y = mx + 7. The individual slope would then have to be substituted into this equation.