SOLUTION: Please help me solve this problem. Find the value of "a" if a line containing the point (a, -3a) has a y-intercept of 7 and a slope of -2/3

SOLUTION: Please help me solve this problem. Find the value of "a" if a line containing the point (a, -3a) has a y-intercept of 7 and a slope of -2/3

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Question 981963: Please help me solve this problem. Find the value of "a" if a line containing the point (a, -3a) has a y-intercept of 7 and a slope of -2/3
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Slope-intercept form equation, y=mx+b

If you have a point as (a,-3a), then you have x=a and y=-3a, which you substitute into the equation.

and now solve this for a.
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