SOLUTION: I was wondering if you could tell me whether these two questions are correct? Find the slope and y-intercept: -9x - 8y = -64 I got Slope:m=9/8 and y-intercept b = -8 Is

Algebra ->  Linear-equations -> SOLUTION: I was wondering if you could tell me whether these two questions are correct? Find the slope and y-intercept: -9x - 8y = -64 I got Slope:m=9/8 and y-intercept b = -8 Is       Log On


   

Question 93668: I was wondering if you could tell me whether these two questions are correct?
Find the slope and y-intercept: -9x - 8y = -64
I got Slope:m=9/8 and y-intercept b = -8 Is this correct?
Find the Slope: 7x + 2y = -11
I got Slope: m=7/2 Is this correct?
Thank you for your help.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
"Find the slope and y-intercept: -9x - 8y = -64 "

Solved by pluggable solver: Converting Linear Equations in Standard form to Slope-Intercept Form (and vice versa)
Convert from standard form (Ax+By = C) to slope-intercept form (y = mx+b)


-9x-8y=-64 Start with the given equation


-9x-8y%2B9x=-64%2B9x Add 9x to both sides


-8y=9x-64 Simplify


%28-8y%29%2F%28-8%29=%289x-64%29%2F%28-8%29 Divide both sides by -8 to isolate y


y+=+%289x%29%2F%28-8%29%2B%28-64%29%2F%28-8%29 Break up the fraction on the right hand side


y+=+%28-9%2F8%29x%2B8 Reduce and simplify


The original equation -9x-8y=-64 (standard form) is equivalent to y+=+%28-9%2F8%29x%2B8 (slope-intercept form)


The equation y+=+%28-9%2F8%29x%2B8 is in the form y=mx%2Bb where m=-9%2F8 is the slope and b=8 is the y intercept.






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"Find the slope and y-intercept: 7x + 2y = -11 "

Solved by pluggable solver: Converting Linear Equations in Standard form to Slope-Intercept Form (and vice versa)
Convert from standard form (Ax+By = C) to slope-intercept form (y = mx+b)


7x%2B2y=-11 Start with the given equation


7x%2B2y-7x=-11-7x Subtract 7x from both sides


2y=-7x-11 Simplify


%282y%29%2F%282%29=%28-7x-11%29%2F%282%29 Divide both sides by 2 to isolate y


y+=+%28-7x%29%2F%282%29%2B%28-11%29%2F%282%29 Break up the fraction on the right hand side


y+=+%28-7%2F2%29x-11%2F2 Reduce and simplify


The original equation 7x%2B2y=-11 (standard form) is equivalent to y+=+%28-7%2F2%29x-11%2F2 (slope-intercept form)


The equation y+=+%28-7%2F2%29x-11%2F2 is in the form y=mx%2Bb where m=-7%2F2 is the slope and b=-11%2F2 is the y intercept.






note: I notice that you have the right values, but you have the incorrect signs