Y = ('x' times any number) + 7
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Quadratic, simultaneous and straight line equations
Straight line equations have two variables in the form of x and y
The French mathematician Rene Descartes
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.
Because, if plotted on a Cartesian plane, all solutions to the equation would lie on a straight line.