Ireally need ! how do you do this?

Step-by-step explanation:

a. AB pass thro' (0,3) n (5,0)

so its eqn is (y-3)/(x-0) = (3-0)/(0-5)=-3/5

y=(-3/5)x + 3

b. area of ABC=1/2*base*height

=1/2*3*5=7.5

c. line perpendicular to AB has slope = 1/slope of line AB

= 1/(-3/5)

= -5/3

it passes thro' A (0,3) which is the y-intercept

so its eqn is y = (-5/3)x + 3

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!

493 would be the correct answer

step-by-step explanation: