You can
put this solution on YOUR website!Get any straight line equation in the form y=mx+c...m is the gradient and c is the y-intercept. Any straight line will cross the x-axis once ONLY (unless the line is parallel to the x-axis, then no crossing).
The x-value at which the line crosses the x-axis is called the SOLUTION or ROOT of the equation. So, there will NOT be 3 solutions!!!
solution...
2y = 4x + 4
so, y = 2x + 2
gradient is +2
y-intercept is at y=2
when y=0, x=-1 --> this is the root (or solution)
so draw your axes, plot these two points and draw a straight line between them. Done!
Jon
