Algebra
posted by Izzy .
What is the slope and yintercept of 4,10

Please be careful to type exactly what your question is. Could you possibly mean the equation
y = 4 x  10 ????
in that case the slope would be  4 and when x = 0 the line hits y = 10 so the y intercept is 10 
no the question is what is the slope and yintercept of the line in part b? and part b gives the equation y=2/3x12
then tells you that they may want to make repairs could you place it at the point (4,10)on the graph. 
Oh, ok sure if the equation is
y = (2/3)x  12
the slope is 2/3
when x = 0, y = 12 so 12 is the y intercept
when y = 0, x = 18 so that is the x intercept
now if the point (4,10) is on the line then:
10 = (2/3)(4)  12 ???
10 = 8/3  12 no way, not on the line
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