PLEASE HELP ME IM DOING A TEST :Write in point-slope form an equation of the line that passes through the point (5, 9) with slope 7.

y-9+7(x-5)

Step-by-step explanation:

y - x1 = m ( x - y1 )

Y1 = 9

x1 = 5

m=slope (in this case 7)

[7x-y-26=0]

Step-by-step explanation:

point slope form =

y-y1=m(x-x1)

=

y-9=7(x-5)

=

[7x-y-26=0]

you may want the y-9=7(x-5) as your answer

second part of this is for vertex form

vertex form Use formula y=mx+b where m is slope

y is equal to 9

x is equal to 5

b=?

m=7

9=7*5+b ---> b=  -26

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

the answer is b.)

< 1=< 2