Which is an equation in point slope form of the line that passes through the points (7 -8) and has a slope of -3

y = -3x +13

Step-by-step explanation:

Slope is also known as gradient. The slope of a line is represented by the equation below.

Slope (m)  = y - y1/ x - x1

Where m = -3 , x1= 7 and y1 = -8

Imputing the values into the equation

m = y - y1/ x - x1

-3 = y - -8 /x - 7

Cross multiply, we have

y + 8 = -3(x - 7)

Expand

y+8 = -3x + 21

Subtract 8 from both sides

y+8-8 = -3x + 21-8

y = -3x +13

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you need to show the graph

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,