Write the equation of the line with slope -2 through the point (7,-1)

y = -2x + 13

Step-by-step explanation:

To find the equation, we need to find the y intercept. To find the y intercept, plug in the points you have into the slope-intercept equation.

Slope intercept equation: y = m(x) + b

y (a y-coordinate) = -1

x (a corresponding x-coordinate) = 7

m (the slope) = -2

b (the y-intercept) = ?

-1 = -2(7) + b

Now, solve for b.

-1 = -14 + b

13 = b

Therefore, the y intercept is 13.

Now, we can write the equation in slope-intercept form.

y = -2x + 13

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas