She should use a computer to select 30 students at random then ask which ones play chess. The other options could produce more skewed results.
Step-by-step explanation:
given,
point = ( -10, -8 ) and ( -8, -16 )
we know,
slope = y2 - y1 / x2 - x1
x1 , y1 = (-10 , -8 )
x2 , y2 = ( -8, -16 )
after inserting the values we got,
→ -16 - (-8 ) / -8 - (-10)
→ -8/2 → -4
therefore, slope of line is -4.
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2280 cm2, 2*((24*10)/2)+24*34+10*34+34*26=2280