Question 4(multiple choice worth 4 points)

(02.05 mc)

a student solved the following problem and made an error:

line 1

line 2
∠a ≅ ∠f
line 3
length of .
a (0, 2)
b (2, 4)

= 2.83
line 4
length of .
d (2, 0)
f (4, 2)

= 2.83
line 5

line 6
by sas

in which line did the student make the first mistake?

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold