Which of the following is the equation of a line that passes through (-2, -1) and (-4, -3)?

y = x+1

Step-by-step explanation:

You should use the point-slope form of y-y1 = m(x-x1) to solve this.

First you use the slope formula to find your slope. (y2-y1)/(x2-x1)

(-1 - -3)/(-2 - -4) = 2/2 = 1

With the slope of 1 found, just plug a point into the point-slope form.

y-(-1) = (1)(x-(-2)) ->

y+1 = x+2 ->

y = x+1

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

12cm

the answer is d