Question 838334
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Hi,
Write an equation for the line passing through (9,12) {{{highlight(x = 9)}}}( Blue)
and perpendicular to y = 7 in slope intercept form. (Green)

{{{drawing(300,300,  -15,15,-15,15,  blue(line(9,15,9,-15)) ,
 grid(1),
circle(9, 12,0.4),
graph( 300, 300, -15,15,-15,15,0,7))}}}