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?

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

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

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

Is it a fraction

yes, the fraction is -8/5

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