Write the point-slope form of an equation of the line through the points (-7, 7) and (4, 1).

Choice B. .

Step-by-step explanation:

Start by finding the slope of this line. Let and represent two distinct points on a line on a Cartesian Plane. (That is, .) The slope of this line would be:

.

For the line in this question:

Indeed, . The slope of this line would thus be , which is equal to .

On a Cartesian Plane, the point-slope form of a line that has a slope of and includes the point can be written as:

.

(Note the minus signs in this form.)

For the line in this question, . There are two equivalent expressions for its point-slope form:

answer: x=3 and y=4

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -