Solve the line equation for "y", to get it in slope-intercept form. You can immediately read the slope from this equation.Divide -1 by (slope of this first line) to get the slope of the second line - the one perpendicular to the given line.
Write an equation for any line with this slope.
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The list of choices that came along with the questiondoesn't include any graph that represents that equation.
slope
As for example the perpendicular equation to line y = 2x+6 could be y = -1/2x+6 because the negative reciprocal of 2x is -1/2x
If the function is a straight line equation that passes through the graph once, then that's a function, anything on a graph is a relation!