Slope-Intercept Practice

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Question 1
State the slope and y-intercept for the equation below:
                             
                  3y -5x = 9

You can use the picture shown on the right as reference.
slope-intercept form of a line

Answer

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A. m = 5/3   and  b = 3
B. m = 5/3   and  b = -3
C. m = -5/3 and  b = 3
D. m = -5/3   and  b = -3
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Step by Step Solution 

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Step 1
Looking at the equation of a line below:

                  3y -5x = 9

We know that the equation is not in the Slope-Intercept Form. Hence, we have to change this equation into the form of y=mx+b. 
slope-intercept form of a line
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Step 2
To change the equation into the form of y=mx+b, we need to make y as the subject of the equation (i.e. y = something). Therefore:

changing the equation to slope-intercept form
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Step 3
Now, from the equation:
 
Slope-Intercept Form of 3y-5x=9

When we compare it with y = mx+b, we have:

   slope         =  m = 5/3 
   y-intercept =  b = +3 = 3

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Step 4
Clearly, the answer is A.
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