Question 689014
1.  4x + 5y = 10 : solve for y
5y = -4x + 10
y = {{{(-4/5)x + 2}}}
slope is {{{highlight_green(-4/5)}}}
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2.  Perpendicular lines have a negative reciprocal/inverse slope.
A perpendicular line to g will have a slope of {{{highlight_green (2/5)}}}
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3.  Using the point (0, 0) or origin and the slope of 3, apply the point-slope formula of {{{y-y1=m(x-x1)}}}
y - 0 = 3(x-0)
{{{highlight_green(y = 3x)}}}
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