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Write an equation in slope-intercept form for the line described.

x-intercept -9, y-intercept 7

 

The equation of the line is y=

Guest May 25, 2017

Best Answer 

 #1
avatar+7155 
+2

y = mx + b

 

In this form, we know that b is the y-intercept..... b = 7

y = mx + 7

 

We know that this line passes through the point (-9, 0) , so we can plug this point in and solve for m.

0 = m(-9) + 7

-7 = -9m

7/9 = m

 

Now we know b = 7 and m = 7/9 , so the equation of this line in slope-intercept form is

y = (7/9)x + 7

hectictar  May 25, 2017
 #1
avatar+7155 
+2
Best Answer

y = mx + b

 

In this form, we know that b is the y-intercept..... b = 7

y = mx + 7

 

We know that this line passes through the point (-9, 0) , so we can plug this point in and solve for m.

0 = m(-9) + 7

-7 = -9m

7/9 = m

 

Now we know b = 7 and m = 7/9 , so the equation of this line in slope-intercept form is

y = (7/9)x + 7

hectictar  May 25, 2017
 #2
avatar
+1

Thank You

Guest May 25, 2017

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