Slope of line a: 2/7 slope of line b: 7/2 lines are parallel, perpendicular or neither ?

Lines are neither parallel nor perpendicular

Step-by-step explanation:

Two line are parallel when they have same slope.

Two lines are perpendicular when the product of slope of the two lines are (-).

ie. m₁ * m₂ = -1

They are neither parallel nor perpendicular.

Note: For slopes to be parallel, they must be equal i.e if M1 denote the slope of the first line and M2 the slope of the second line , if they are parallel then M1 = M2 and if they are perpendicular M1 = -1/ M2

Step-by-step explanation:

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

1,918

step-by-step explanation: