Question 523388
y = 5x is already in slope-intercept form:  y = mx+b
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y = 5x is actually y = 5x + 0
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So, the y=intercept is (0,0).
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Of course that means the x-interept is (0,0), too.
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{{{ graph(500,500,-5,5,-5,5,5*x) }}}