What is the point slope form of (7,-4) and (-1,3)

y-3 = -7/8(x+1)

Step-by-step explanation:

The slope of a line given two points is given by

m = (y2-y1)/(x2-x1)

    = (3 - -4)/(-1 -7)

     = (3+4) / (-1-7)

      = 7/ -8

  = -7/8

The point slope form of a line is

y-y1 = m(x-x1)

y - 3 = -7/8( x - -1)

y-3 = -7/8(x+1)

First, lets find the slope.

Slope Formula: y2-y1/x2-x1

= 3-(-4)/-1-7

= 7/-8

= -7/8

Point slope form: y - y1 = m(x - x1)

We can use one point to substitute y1 and x1 with. We can also substitute m with the slope. Lets use the point (7,-4) and the slope of -7/8 to solve.

y - (-4) = -7/8(x - 7)

y + 4 = -7/8(x - 7)

Best of Luck!

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)