What are the answers to this question for a and b

Algebra
Tutor: None Selected Time limit: 1 Day

line a has intercepts (5,0) and (0,8) 

A. Find the equation of line a?

B. Is point (10,8) also on line a?How do you know?

Apr 19th, 2015

A.  slope = 8/-5 = -8/5

y - 0 = -8/5(x - 5)

y = - 8/5x + 8

B.   Plug in the coordinates into the equation of the line

8 = -8/5(10) + 8 ?

8 = -16 + 8 ?

8 = -8 ?  NO

Therefore, the point (10,8) is NOT on the line

Apr 19th, 2015

Is that - 8 over 5 x +8     Is -8/5 a fraction 

Apr 19th, 2015

it's (-8/5)x + 8

Apr 19th, 2015

Is it a fraction 

Apr 19th, 2015

yes, the fraction is -8/5

Apr 19th, 2015

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Apr 19th, 2015
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